Michigan Highways: Since 1997.

Michigan Highways website header graphic

What's New?

As the Michigan state trunkline system is constantly evolving and new (or "new" historical) information is discovered or passed along, new and updated information is added to this site. Below is a list of nearly all of those changes, with the latest ones listed first.

February 26, 2017   New! Here are today's site updates:
  • To reflect the documentation of the second interation of M-13 along present-day M-136 from 1931–1934, new April 1927 and February 1931 historical items are added to the M-13 route listing and the April 1927 and August 1931 items are updated.
  • Additionally, the March 1933 and Janiaru 1935 historical items are updated and expanded on the M-13 route listing.
  • In part due to the updates above, th February 1931 and June 1962 historical items on the M-136 route listing are updated and expanded.
February 21–22, 2017   New! More "new style" route listings and other updates to the site:
February 18, 2017   New! Latest updates:
  • Added a few newly-discovered historic route designations to the Master List:
    • CONN US-10 and CONN US-27 –  the wbd-US-10 to nbd US-27 and sbd US-27 to ebd US-10 connector at Clare in the 1960s and early 1970s
    • US-41A or ALT US-41 – proposed, but never implemented at Negaunee and Ishpeming
    • BUS M-78 – proposed to run concurrently with BUS US-27 at Charlotte
    • BUS M-83 – proposed, but never implemented in Flint
    • BL I-196 – proposed, but never implemented at Grand Rapids
  • Updated the Notes sections for the M-54 and M-83 route listings to reflect the original proposal to extend M-83 southerly through Flint instead of designating M-54 along the route.
February 8, 2017   New! Here's what's changed on the site:
February 6, 2017   New! Updated today:
  • After much delay, the long-neglected US-12A routing in downtown Saint Joseph from the 1930s has finally been added to the Master List. More information on this route will be added to the site in the future, but at least now it's documented on the Master List! Many thanks to Marc F. for his repeated and insistent badgering...
  • Added a new January 1963 historical item to the Historic US-27 route listing.
February 4, 2017   New! Here's some more stuff that's changed or been added:
  • Found yet another former "undiscovered" state trunkline from yesteryear! This time an earlier iteration of M-160 than previously known (1929–1935) at Springport, but never actually signed in the field. Updated the Master List with this new M-160 routing.
    Online 20 Years, 1997-2017
  • As of this June, the Michigan Highways website will have been online 20 full years! To celebrate this achievement, I've added some new graphics to the site header image highlighting this fact.
  • Updated the May–July 1960 historical item on the M-55 route listing.
February 3, 2017   New! Lots more historical item updates today:
January 30, 2017   New! Updated the November 1971 historical items and added new September 1971 items to the M-40, M-51 and M-119 route listings.
January 27, 2017   New! Added "new style" route listings for M-97 and Former M-98 and made the necessary changes to the Routes 90–99 page. These listings also feature completely overhauled and updated history sections!
January 25, 2017   New! Added a "new style" route listing for M-96 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section and including an actual map of the route of M-96, too! Also added a new July 1926 historical item to the M-99 route listing.
January 23, 2017   New! Updated the 1961 and January 1966 historical items and added the January 1962 item on the M-37 route listing.
January 21, 2017   New! Updated the October 1940 historical items on the US-12 and BUS US-12/BL I-94 (Battle Creek) route listings.
January 20, 2017   New! A pair of updates:
January 19, 2017   New! Here's what's updated today:
  • "Discovered" a heretofore unknown US-2A designation at Ironwood which existed from 1934–1939 and updated the Master List and various items on the US-2 route listing.
  • Updated two 1933 historical items and added new November 1932, February 1933, and December 1933 items to the US-2 route listing.
  • Added details of a planned-but-never-implemented upgrade to the route of BL I-94 at Battle Creek to the Notes and History sections of the BL I-94 (Battle Creek) route listing.
  • Added missing NHS information to the M-94 and M-95 route listings.
January 18, 2017   New! A trio of updates today:
  • Updated the October 1936 historical item and completely overhauled and rewrote the March/August 1937 item on the US-12 route listing.
  • Added the history of the historic US-12A route designation in downtown Battle Creek to the beginning of the BUS US-12/BL I-94 (Battle Creek) route listing, as it was a predecessor route to the existing one.
  • Added a newly discovered US-12A route designation at Fort Custer to the Master List.
January 17, 2017   New! Added new July 1927 historical items to the Historic US-25, Historic US-16, Historic US-112, US-10 and M-53 route listings.
January 16, 2017   New! After months of research, an entirely overhauled and expanded I-96 route listing debuts. A complete historical timeline of ALL routes which eventually became part of I-96 has been incorporated. Additionally:
January 15, 2017   New! Four updates today:
January 11, 2017   New! A pair of updates today:
January 10, 2017   New! Here's the new stuff:
  • Updated the M-5 and OLD BS I-96 (unsigned trunkline) route listings to show the extension of M-5 into downtown Detroit and the resultant decommissioning of the OLD BS I-96 internal designation. Also recalculated the length of M-5 based on its newly-signed mileage.
  • Updated the date on the October 1969 historical items on the M-37 and M-44 route listings.
  • Added a February 1972 historical item to the M-6 route listing.
January 9, 2017   New! The latest website updates and additions:
January 5, 2017   New! Added a new April 1963 historical item to the I-96 and I-196 route listings.
January 4, 2017   New! Today's changes, additions and updates:
January 2–3, 2017   New! Here's what's changed or been added to the website today:
January 1, 2017   New! Happy New Year! Today's updates and changes to the website:
  • Updated the November-December 1962 historical item on the I-75 route listing.
  • Added new Dec 21, 1961 and Mid 1962 items and updated the December 1962 historical item to the I-96 and Historic US-16 route listings.
  • Updated the September and November 1962 historical items on the US-23 route listing.
December 27, 2016   New! The changes uploaded to the site today:
December 3–4, 2016   New! Here's what's changed or been added to the website today:
  • Updated the August 1963 historical listings and added new September 1963 items to the I-96 and US-31 route listings.
  • Updated the December 1962 historical items on the I-96 and Historic US-16 route listings.
  • Added a new July 1963 historical item to the I-96 route listing.
  • Updated the December 1963 historical item and added a new February 1964 item to the I-496 route listing.
  • Added a new February 1965 historical item to the I-194 route listing.
December 2, 2016   New! Today's list of website updates and additions:
December 1, 2016   New! Added new July 1986 and June 1989 historical items and updated the October 1989 item in the Capitol Loop route listing.
November 30, 2016   Another raft of updates to the website today:
  • Added a June 1988 historical item to the I-696 route listing.
  • Added a June 1988 historical item to the US-31 route listing.
  • Updated November 1971 historical items on the M-40, M-51 and M-119 route listings.
  • Updated the November 1971 historical items on the I-69 and Historic US-27 route listings.
  • Added October 1968 historical items and updated the August 1971 and December 1971 items on the M-21 and M-78 route listings.
  • Added December 1971 and June/September 1972 historical items to the M-21 route listing.
  • Updated the May 1977 and September 1997 historical items on the M-1 route listing.
November 29, 2016   Today's site updates:
November 27, 2016   Today's updates and changes to the website:
November 26, 2016   The following changes to the website were made today:
November 25, 2016   Today's updates and changes to the website:
November 24, 2016   Today's site updates:
September 22, 2016   Made minor modifications and updates to the M-35: The Highway Henry Ford Stopped article.
September 21, 2016   Converted the Early US-12, Willow Run, Detroit Industrial & Edsel Ford Freeways page from separate year-by-year histories of different segments of what became I-94 into one chronological history of I-94 before I-94 existed. (Mirrors the first portion of the history section of the I-94 route listing.)
September 8, 2016   Made several updates to the M-22 route listing, inclduing adding images of the new "M-less" M-22 route markers (to deter stolen signs) and another chapter in the long-running feud between the State of Michigan and M22, LLC over the ability to copyright the design of the M-22 route marker.
July 25, 2016   Updated the following pages and listings with information on the new West Michigan Pike Historic Byway which debuted today:
July 9, 2016   Added a new August 1961 historical item to the Historic US-27 route listing.
July 8, 2016   Added a new June 1958 historical item to the I-94 route listing and a new Nov 1957 historical item to the M-8/Davison route listing.
July 7, 2016   Updated the 1936 historical items in the US-23 and M-72 route listings. Also updated the M-171 information in the Master List.
June 30, 2016   Added a neat new tidbit I just discovered about the genesis of the route of M-49 through Hillsdale Co to the M-49 route listing!
June 15, 2016   Added a "new style" route listing for M-95 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section and including an actual map of the route of M-95, too! Also created the M-95: Republic Mine Reroute (1958) page with a slider function to compare the 1955 and 1977 USGS Topographic maps for the Republic area.
June 8–9, 2016   A few updates to the website dealing with M-44:
  • Made several updates throughout the M-44 route listing to reflect its re-truncation in the Grand Rapids area.
  • Added an actual map of the route of M-44 as well.
  • Updated the M-21, M-37 and OLD M-21 (East G.R.) route listings to reflect the M-44 changes in the Grand Rapids area.
  • Also recalculated the lengths for all current state trunkline routes from US-24 through M-99 to the one-thousandth mile using official State of Michigan geographic information system data.
June 4–5, 2016   Here are the updates to the site from the weekend:
  • Almost completely overhauled and updated the history section of the M-45 route listing (in conjunction with the new M-95 route listing, currently under construction).
  • Added a new 1934 historical item and augmented the 1935 item on the US-45 route listing.
  • Added new information to the 1964 historical item on the M-50 route listing.
June 1, 2016   Added a "new style" route listing for M-94 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section and including an actual map of the route of M-94, too! Also added a new 1976 item and made updates to the 1983 item in the history section of the US-2 route listing.
May 30-31, 2016   The latest updates and changes to the site:
May 26-27, 2016   Today's website updates and changes:
May 23–24, 2016   After months of research, an entirely overhauled and expanded I-94 route listing debuts. A complete historical timeline of ALL routes which eventually became part of I-94 has been incorporated. Also updated:
May 22, 2016   Today's updates and changes to the website:
March 27, 2016   Changes on the site today:
  • Updated the 1984 historical item in the I-69 route listing.
  • Updated the 1965 historical items in the M-66 and M-78 route listings.
March 26, 2016   A pair of changes on the site today:
March 24, 2016   Here's what's new on the site:
March 19, 2016   The following changes to the website were made today:
  • Added the exact date for the completion and opening of the Davison Expwy to the 1942 entry in the history section of the M-8 route listing.
  • Also added a "then-and-now" set of photos showing the Davison at Brush St from 1942 and 2015 to the M-8 route listing.
March 18, 2016   Made various updates and added new historical information to the 1930, 1933 and 1934 entries of the historical section of the M-153 route listing.
March 17, 2016   Added two new proposed-but-seemingly-never-implemented route designations to the Michigan Highways Master List: a second M-114 designation and a BUS M-14 routing, both at Ann Arbor.
March 15, 2016   Added a depiction of the 1964–1974 era exit signs that were posted along I-94 as part of the State Highway Dept's first attempt at numbering and signing interchanges in the 1960s to the Other Route Markers section of the Michigan's Route Markers page.
March 14, 2016   The following changes to the website were made today:
March 13, 2016   The following changes to the website were made today:
February 8, 2016   Updated an existing (Aug 1, 1957) and added a new (Nov 4, 1959) historical item to the I-96 and Historic US-16 route listings.
February 7, 2016   The following changes to the website were made today:
  • Added one new (Feb 1957) and updated an existing (June 30 1958) historical item to the I-75 route listing.
  • Updated an historical item (June 30 1958) to the US-23 route listing.
  • Updated an historical item (July 3–7, 1958) to the US-131 route listing.
  • Updated an existing (Nov 25, 1957) and added a new (July 3, 1958) historical item to the US-41 and M-28 route listings.
February 4, 2016   Uploaded a refreshed header image for the site.
January 24, 2016   Updated the July 27, 1971 entry in the history section of the I-96 route listing.
January 20, 2016   Updated the Oct 5, Nov 2 1962 entry on the US-131 route listing.
January 19, 2016   The following changes to the website were made today:
January 14, 2016   The following changes to the website were made today:
January 12, 2016   Updated and expanded an historical item (1959) in the history section of the US-127 route listing. Also added a new historical item (1966) to the M-50, BL I-94 (Jackson) and BUS US-127 (Jackson) route listings.
January 11, 2016   Added new historical item (1966) to the history sections of both US-127 and US-223 route listings.
January 10, 2016   Added a new historical item (1948) to the history of Former US-16.
December 31, 2015   Updated the Master List of all state trunkline designations in history with the designation of the Bancroft Spur from the 1930s: M-192.
November 30, 2015   Added a "new style" route listing for M-93 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section and including an actual map of the route of M-93, too!
November 26, 2015   Added a "new style" route listing for Former M-92 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section!
November 25, 2015   Completely overhauled, augmented and updated the history section of the M-49 route listing to better match the historical timelines of related routes M-36, M-92 and M-106.
November 23, 2015   Added actual route maps to the following route map pages:
November 22, 2015   Today's site updates:
November 21, 2015   Added a "new style" route listing for M-91 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section!
November 20, 2015   Today's site updates:
November 19, 2015   More new and updated historical information added today:
  • Added some new historical information to the Early I-94 page, which details the historical development of what is now I-94 prior to its designation as I-94.
  • Updated the M-66 route listing and the M-14 route listing to add a more precise date for the decommissioning of M-14 and its replacement by M-66 in mid-Michigan.
  • Added a new historical tidbit to the M-94 route listing.
November 17, 2015   Some new historical information added today:
November 16, 2015   A pair of updates for today:
  • Added an interesting historical note to the M-28 route listing Notes section on a proposal to realign M-28 between Newberry and Munising, along with an accompanying map showing the proposal.
  • Added a heretofore unknown M-148 route designation to the Master List—to have served as an access route into Muskegon State Park via North Muskegon, but was likely never signed in the field.
November 13, 2015   A pair of updates for today:
  • Updated the Master List with an earlier incarnation of M-169 than had been previously known. This route was initially designated as "M-36 STUB," although it was highly unlikely it was ever signed as such in the field. Both the M-36 STUB and its eventual replacement, the newly-discovered first iteration of M-169, have been added to the list.
  • Added a "new style" route listing for M-90 and made the necessary changes to the Routes 90–99 page. This listing also features a completely overhauled and updated history section!
November 12, 2015   Added "new style" route listings for M-89 and M-134 and made the necessary changes to the Routes 80–89 and Routes 120–139 pages. These listings also feature completely overhauled and updated history sections!
November 3–8, 2015   Added "new style" route listings for M-84, M-85, M-86, Former M-87, and M-88 and made the necessary changes to the Routes 80–89 page. These listings also feature completely overhauled and updated history sections! Also added an entry for a newly-discovered M-163 designation from the early 1930s to the Michigan Highways Master List.
October 31, 2015   Made some updates to the M-231 route listing, including adding three pages of photos and a time-lapse video made from a bicycle five days prior to its opening to traffic. M-231 opened to traffic on October 30.
October 28, 2015   Added a "new style" route listing for M-83 and made the necessary changes to the Routes 80–89 page. This listing also features a completely overhauled and updated history section! Also made a few historical corrections/updates to the M-81 and M-82 route listings and added an M-231 Route Map to that listing as well.
October 26, 2015   Added a "new style" route listing for M-82 and made the necessary changes to the Routes 80–89 page. This listing also features a completely overhauled and updated history section! Also added additional information to the M-231 route listing regarding its dedication, non-motorized pathway and impending opening at the end of the week.
October 25, 2015   Added a "new style" route listing for M-81 and made the necessary changes to the Routes 80–89 page. This listing also features a completely overhauled and updated history section!
October 16, 2015   Based on feedback from a site visitor, a few corrections were made to the text on the Pure Michigan Byways page. –Thanks Michael!
October 13, 2015   M-231 in Ottawa Co is scheduled to open in the next few weeks. I've updated and/or overhauled the following M-231-related pages:
October 13, 2015   M-22 is selected as the No.1 Best Scenic Autumn Drive in USA Today's 2015 Reader's Choice Award Poll and the M-22 Route Listing is updated to reflect the award.
October 12, 2015   Made major updates to the Pure Michigan Byways (formerly the Heritage Routes) pages, including adding the new Pure Michigan Byways route marker, focusing:
August 17, 2015   Added a "new style" route listing for M-80 and made the necessary changes to the Routes 80–89 page. This listing also features a completely overhauled and updated history section!
August 7, 2015   Added "new style" route listings for M-78 and M-79 and made the necessary changes to the Routes 70–79 page. These listings also feature completely overhauled and updated history sections! Also made some significant alterations to the history sections for the following:
August 7, 2015   Added some new historical information to the US-223 route listing.
August 2, 2015   Added a "new style" route listing for M-77 and made the necessary changes to the Routes 70–79 page. This listing also features a completely overhauled and updated history section!
August 1, 2015   Added "new style" route listings for Former M-70 and Former M-76 and made the necessary changes to the Routes 70–79 page. These listings also feature completely overhauled and updated history sections! Also made some significant alterations to the history section of the M-55 listing.
July 30, 2015   Added "new style" route listings for I-75 and M-75 and made the necessary changes to the Routes 70–79 page. These listings also feature completely overhauled and updated history sections!
July 29–30, 2015   Updated the history sections of the M-13 route listing, US-23 route listing, US-31 route listing(several new historical updates and additions), and the I-696 route listing.
July 27–28, 2015   More updates and additions to the site today, including:
July 25–26, 2015   Updates some of the historical information on the following route listings:
July 20, 2015   Made the following changes, updates and corrections:
July 18, 2015   Made the following changes, updates and corrections:
  • Added "new style" route listings for M-72 and M-73 and made the necessary changes to the Routes 70–79 page. These listings also feature completely overhauled and updated history sections!
  • Added a "new style" route listing for Former M-208 featuring a complete history section.
  • Found an older routing of M-97 in Oscoda Co from the 1920s and added it to the M-97 route listing also updating the M-33 route listing as well.
  • Located some "official" information on the "un-signing" of I-296 in Grand Rapids and added it to the I-296 route listing.
July 10, 2015   Added a "new style" route listing for M-71 and made the necessary changes to the Routes 70–79 page. This listing also features a completely overhauled and updated history section!
July 6, 2015   Added a "new style" route listing for M-69 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
July 5, 2015   Added a "new style" route listing for I-69 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
July 4, 2015   Added a "new style" route listing for M-68 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
July 3, 2015   Added "new style" route listings for M-66 and M-67 and made the necessary changes to the Routes 60–69 page. These listings also feature completely overhauled and updated history sections! Also added new historical entries to the M-51 and M-53 route listings.
April 17, 2015   Added udpates to the following route listings, mostly with regard to jurisdictional transfers:
  • M-24 – updated the listing with the delayed transfer of a segment of the 1997 extension in Caro from village to state control in 2001.
  • US-27 & BUS US-127 (St Johns) – reflecting the actual transfer date of Price Rd as the temporary route for US-27 and the eventual route for BUS US-(1)27 at St Johns in 1996.
  • US-31 – added some language regarding the "temporary" transfer of Napier Ave in Berrien Co as well as added the actual date of transfer for OLD US-31 at Scottville in 1997.
  • M-32 – reflecting the transfer of a segment of OLD M-32 in eastern Otsego Co to local control.
  • M-50 – added the actual transfer date for the M-50 turnback in Monroe in 1996.
  • M-53 – reflecting the first jurisdictional transfer of a portion of OLD M-53 at Romeo in 2001.
  • M-66 & M-72 – reflecting the jurisdictional transfer of OLD M-66/M-72 in Kalkaska in 1996.
  • M-93 – reflecting the relocation of its southern terminus at Camp Graying in 2012.
  • M-99 – reflecting the route change through downtown Hillsdale in 2007.
  • US-131 – reflecting the jurisdictional transfer of a segment of OLD US-131 in Montcalm Co in 1996.
  • M-217 – added some more information and the precise date of the jurisdictional transfer
  • BL I-94 (Jackson) – reflecting the relocation of its eastern terminus east of Jackson in 2013.
  • OLD US-27 (Eaton Co) – reflecting the transfer of half of the route in 2008.
  • OLD US-131 (Mecosta-Osceola) – reflecting the transfer of the route south of Reed City.
March 13, 2015   Added a "new style" route listing for M-65 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
March 12, 2015   Updated the Tahquamenon Scenic Byway listing on the Scenic Heritage Routes page as it transitions from the old Tahquamenon Scenic Heritage Route name. Also updated the M-123 Route Listing to reflect the rebranding of the byway. Additionally checked all of the external links for each of the Heritage Route listings on the main Heritage Route, Scenic Heritage Route, Historical Heritage Route, and Recreational Heritage Route pages. Also added Heritage Route and Great Lake Circle Tours marker images to each of the individual route listings that feature mileage on those routes.
March 11, 2015   Updated the history section for the M-103 route listing with some "new" historical information.
March 9, 2015   Based on feedback from a site visitor, uploaded several minor corrections to a few newly-updated pages. —Thanks much Tom S!
March 5, 2015   Updated the Heritage Routes (Pure Michigan Byways) page to reflect passage of legislation rebranding of the program to the Pure Michigan Byways. Also added a "Pure Michigan Byways" category to each individual route listing page for all highway routes in the byways program. Additionally, made a few updates to the Lake Michigan Circle Tour and Lake Superior Circle Tour pages as well.
March 4, 2015   Added a "new style" route listing for M-64 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
March 1, 2015   Checked and updated many of the external links in the various In Depth: News & Articles section of the website.
February 28, 2015   Uploaded a new header graphic for the entire site. I figured a website on Michigan highways should at least have a graphic depiction of the State of Michigan in its header.
February 23, 2015   Added a "new style" route listing for M-63 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section! Also created a new M-63: Klock Rd Interchange Animation page with an looping animation of aerial images showing the interchange before and after its removal in 2001–02.
February 22, 2015   Added a "new style" route listing for M-62 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
February 21, 2015   Added a "new style" route listing for M-61 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section! Also added a bits of new route history to both the M-143 route listing and the M-109 route listing.
February 19, 2015   Added a "new style" route listing for M-60 and made the necessary changes to the Routes 60–69 page. This listing also features a completely overhauled and updated history section!
February 17, 2015   Added a "new style" route listing for M-59 and made the necessary changes to the Routes 50–59 page. This listing also features a completely overhauled and updated history section!
January 17, 2015   Added a "new style" route listing for M-58 and made the necessary changes to the Routes 50–59 page. This listing also features a completely overhauled and updated history section!
January 15, 2015   Added a "new style" route listing for M-57 and made the necessary changes to the Routes 50–59 page. This listing features a completely overhauled and updated the history section, too!
January 14, 2015   Happy New Year! Completely overhauled and updated the history section for the M-55 route listing, easily tripling the amount of information it contained.
December 1, 2014   Added new historical information to the Historic US-27, US-31, Historic US-33, and I-69 route listings. Added a "new style" route listing for M-55 and made the necessary changes to the Routes 50–59 page.
September 30, 2014   Added "new style" route listings for M-53 and M-54 and made the necessary changes to the Routes 50–59 page.
September 17, 2014   Uploaded "new style" versions of the placeholder pages for Routes 10-19, Routes 20-29, Routes 30-39, and Routes 40-49. No new content or information added, just making these pages match the new overall site design.
August 28, 2014   Added a "new style" route listing for M-52 and made the necessary changes to the Routes 50–59 page.
August 16, 2014   Several updates across the website:
May 21, 2014   Added a "new style" route listing for M-50 and made the necessary changes to the Routes 50–59 page. Added several links to historic bridge articles to the M-28 route listing weblinks section.
May 20, 2014   Added "new style" route listings for M-47, M-48, and M-49 and made the necessary changes to the Routes 40–49 page. Also made very minor tweaks to dozens of pages sitewide, inserting the HTML values for fractions (e.g. "½" instead of "1/2") and other similar changes.
May 15, 2014   Added links to the relavent Great Lakes Circle Tour pages to the new Great Lakes Circle Tour website.
April 29, 2014   Added a "new style" route listing for M-46 and made the necessary changes to the Routes 40–49 page.
March 19, 2014   Added "new style" route listings for M-44, US-45 and M-45 and made the necessary changes to the Routes 40–49 page.
March 11, 2014   Updated the link to the official Old Mission Scenic Heritage Route website on the Scenic Heritage Routes page.
March 3, 2014   Added a "new style" route listing for M-43 and made the necessary changes to the Routes 40–49 page. Also added a new entry to the history section of the M-37 route listing.
March 2, 2014   Added "new style" route listings for US-41 and M-42 and made the necessary changes to the Routes 40–49 page. Also added updated and new historical information and other data for the US-2, M-26, M-28, and M-35 route listings.
March 1, 2014   Added a "new style" route listing for M-40 and made the necessary changes to the Routes 40–49 page.
February 27, 2014   Added "new style" route listings for M-37, M-38 and M-39 and made the necessary changes to the Routes 30–39 page.
January 13, 2014   HAPPY NEW YEAR! Added a "new style" route listing for M-36 and made the necessary changes to the Routes 30–39 page.
December 26, 2013   Added "new style" route listings for M-33, M-34 and M-35 and made the necessary changes to the Routes 30–39 page.
December 25, 2013   MERRY CHRISTMAS! Added a "new style" route listing for M-32 and made the necessary changes to the Routes 30–39 page.
December 3, 2013   Added "new style" route listings for M-30 and US-31 and made the necessary changes to the Routes 30–39 page. Also added new historical information to the US-31 route listing as well.
November 29, 2013   Added information on the proposed relocation of M-28 in the Marquette area to the M-28 route listing as well as the M-28: Possible Relocation near Marquette map to both the Maps page and the M-28 route listing. Additionally, the erroneous M-24 route listing was fixed with many thanks to Michael G. for the heads-up on that!
November 13, 2013   Added additional statistics on the numbers of Michigan Lefts in the state and left-turn crash statistics from the FHWA to the Michigan Left Turn page. Added "new style" route listings for M-28 and M-29 and made the necessary changes to the Routes 20–29 page.
November 4, 2013   Added a "new style" route listing for M-27 and made the necessary changes to the Routes 20–29 page.
November 3, 2013   Added "new style" route listings for M-26 and US-27 and made the necessary changes to the Routes 20–29 page.
November 2, 2013   Made minor updates to the Introduction page. Also added "new style" route listings for US-23, US-24, M-24, and M-25 and made the necessary changes to the Routes 20–29 page.
November 1, 2013   Created a "before and after" animated map of the US-131 Constantine Bypass and included links to it on the following pages:
October 30, 2013   The US-131 bypass of Constantine opened to traffic today, which necessitated the following site updates:
October 28, 2013   Added "new" historical information regarding the history of the state route marker to the Michigan's Route Markers page. Also added a "new style" route listing US-23 (including adding some "new" historical information regarding State Highway Dept plans for the route of US-23 during the 1960–1980 timeframe) and made the necessary changes to the Routes 20–29 page. Additionally, revised the article "The Tug-of-War That Was the US-23 Freeway" to use the past tense to more accurately protray it in a historical light, as the project has been officially cancelled for over a decade.
October 27, 2013   Added "new style" route listings for M-21 and M-22 and made the necessary changes to the Routes 20–29 page. Also began added "new" historical information regarding State Highway Dept plans for individual trunkline routes during the 1960–1980 timeframe to the US-2, US-12, M-13, M-14, M-15, M-17, M-18, M-19, M-20, M-21, and M-22 route listings. In addition, new pieces of historical information were added to the M-1, M-8, M-10, Historic US-16, and I-96 route listings.
October 26, 2013   Overhauled the National Highway System (NHS) page in the In Depth section to include the major changes to the system implemented under the MAP-21 transportation funding legistlation enacted in 2012. Also added a "new style" route listing for M-20 and made the necessary changes to the Routes 20–29 page.
October 25, 2013   Added a "new style" route listing for M-19 and made the necessary changes to the Routes 10–19 page. Also overhauled the National Highway System (NHS) information for each route from 1 through 19, including: M-1, M-3, US-10, US-12, M-13, M-15, M-17 , and M-19. As route listings are migrated to the "new style," the NHS information (among all of the other sections) will be revised with the new additions to the NHS under MAP-21.
October 22, 2013   Added a "new style" route listing for M-18 and made the necessary changes to the Routes 10–19 page.
October 1, 2013   Modified the M-108 route listing into the Former M-108 route listing to reflect its transfer to local control in 2010. (Not sure why this one slipped through the cracks!) Thanks to Dave S for pointing out the oversight!
September 3, 2013   Added "new style" route listings for US-16 & M-16 and M-17 and made the necessary changes to the Routes 10–19 page.
August 28, 2013   Added a "new style" route listing for M-15 and made the necessary changes to the Routes 10–19 page.
August 12, 2013   Updated weblinks for two of the NWMCOG-maintained Heritage Routes: M-22: Leelanau Scenic Heritage Route and M-119: Tunnel of Trees Scenic Heritage Route. —Thanks Michelle for the heads-up! Also added a quick-reference table of the various Heritage Routes to the main Heritage Routes (Michigan's Byways) page.
July 23, 2013   In what seems to be a recurring theme, another site visitor wrote in to report a few broken links on the Intercounty Highways page, which have been corrected. —Thanks Mike G for the heads-up!
July 23, 2013   Made a few corrections to some of the history of the Willow Run Expressway on the Early Willow Run, Detroit Industrial & Edsel Ford Freeways page. —Thanks Warren for the heads-up!
July 17, 2013   Corrected a typo on the History of Michigan Roads (page 2). —Thanks Steven for the heads-up!
July 8, 2013   Added "new style" route listings for M-13 and M-14, and made the necessary changes to the Routes 10–19 page.
July 5, 2013   Added "new style" route listings for M-10, M-11, and US-12 and made the necessary changes to the Routes 10–19 page.
July 2, 2013   Added "new style" route listings for M-6, US-8, M-8, US-10, and US-131 and made the necessary changes to the Routes 1–9 Listings and Routes 10–19 pages. Also corrected a slight error and added a new historical note on the M-5 route listing. And based on several e-mails from site visitors (thanks Erik, Nathan and Rob!), I was able to update the M-143 route listing, the Master List and Unsigned Routes pages with the fact that M-143 is, once again, signed in the field!
July 1, 2013   Added the M-5 "new style" route listing to the site and made the necessary changes to the Routes 1–9 Listings page.
May 22, 2013
BIG NEWS
  Added the first three "new style" route listings pages to the site. Since 1997, the Route Listings have consisted of multiple routes (sometimes more than a dozen) per listings page. For example, the Routes 120–139 page not only contains complete details on 13 different routes, but included listings for US-127 and US-131, each of which were quite lengthy in their own rights! With more information being added to many of the listings, including "new" historical data, there seem to no longer be any benefit to breaking down the listings into "ranges" as has been done for the past 16 years. As such, I have begun the long process of separating each listing out into its own page. The first three "new style" route listings to be added to the site are: M-1, US-2, and M-3. At present I am planning on also including separate pages for each former state trunkline highway route as well (e.g. Former M-4). Doing so should allow me to pare down the information on the Master List page a bit, too.

Also made a few updates to the US-31 Freeway in Berrien County article (including adding sub-headings to break up the article a bit) and added the Controlled-Access Highways article to the In Depth section page.
May 21, 2013   In preparation for the "new style" route listings (one route per page), I've added the Controlled-Access Highways page to the In Depth section to help define and differentiate Freeways and Expressways (e.g. Controlled-Access highways and Limited-Access highways).
April 20, 2013   Finally brought the homepage over to the new site style including three new illustrative photos. (The old homepage images had been on there for almost a decade!) Also moved the blurb about being featured in Michigan History magazine to the About This Site page.
March 22–
March 29, 2013
  The majority of the website redesign/refresh work in this timeframe has been on pages in the Other Routes section, some of which have received substantial updates and improvements:
March 15–
March 21, 2013
  Quite a bit more of the site has been converted over to the new design. As each page is converted, all external links are being checked and verified and in many instances new content is being added to either bring the information up-to-date or to augment what's already there. Examples of updated or expanded pages and articles include:
  • Related LInks - All links checked, dead links removed, and several new links added.
  • County Routes & Listings - New "index page" for all things county route-related in Michigan.
  • Intercounty Highways - Moved to a new URL.
  • County Routes - No content yet, but this will become an informational catch-all on the various county route systems other than the Intercounty Highway System (which has been covered on this site for many years).
March 14, 2013   Finished adding all of the current, former, and unsigned Intercounty Highway routes to the Master List: 1918–Present. Still a lot more work to go on the list, though...
March 11–
March 13, 2013
  Changed over more of the site to the new design. Most of the pages under the first drop-down navigation menu ("Michigan's Highways") have been converted over, including:
February 28–
March 11, 2013
  Applied the new site design to more of the website. Instead of listing the individual pages here (that list is getting quite long), suffice it to say that many of the pages have been converted. This includes everything under the In Depth: News & Articles and About This Site headings and additional pages elsewhere. In the process of updating the design, however, some pages and articles have undergone updates or, in a few cases, complete overhauls, including:
February 28, 2013   Started debuting a new overall design and style for the Michigan Highways website. (Additional and continued tweaking will likely take place over the coming weeks and months, though!) The new pages so far are:
February 23, 2013   Updated additional notes in the US-10 and M-10 route listings. Also cleaned up and added new external links on the Highways 10-19 page.
February 21, 2013   Updated a note in the US-10 route listing. Also cleaned up and added new external links on most of the route listings on the Highways 1-9 page.
February 14, 2013   Updated and added new historical information to the I-69 route listing.
January 17, 2013   Took care of a little external link clean-up in the M-1, US-2 (West) and US-2 (East) listings.
January 14, 2013   Added the Diagonal Highways, 1935-36 article to the In Depth section and a larger version of the Diagonal Highways Map, 1936 to the Maps section.
January 13, 2013   Five updates or additions:
  • Added a new Capitol Loop Route Map showing the route and termini of the Capitol Loop in downtown Lansing as well as other information.
  • Updated the Capitol Loop route listing to include links to the new map.
  • Overhauled the Downtown Detroit Trunklines map with minor updates.
  • Updated the Maps page with the new and updated maps.
  • Added a new historical photo of the US-2 interchange at the northern end of the Mackinac Bridge approach roadway (now part of I-75) to the Mackinac Straits Historical Photos page.
  • Uploaded the first new background image for the sitewide header graphic since 2008. (This is a portion of the new historical photo added to the Mackinac Straits Historical Photos page, noted above.)
December 23, 2012   Added notes to the BUS US-223 and Capitol Loop route listings.
December 20, 2012   Updated all of the individual listings on the Heritage Routes page, and added new ones that were missing.
December 11, 2012   Here's some more good stuff:
December 3, 2012   Three more updates:
  • Added information on a segment of I-75 winning the "Parade Magazine Scenic Highway Award" for 1964, selected as the year's finest example of a "driver's road" for scenery, speed and safety from across the country.
  • Updated the M-152 route listing with additional information about its longtime status as a turnback candidate.
  • Made a minor update to the FUTURE M-231 listing.
December 2, 2012   Updated the US-131 route listing for 1956 and 1968 to reflect new historical information on the former four-lane divided segment north of Mancelona. Also updated the Michigan Official Maps: Christopher Bessert Collection listing.
November 30, 2012   Updated the M-168 listing to reflect its decommissioning and transfer to local control in April and amended the Master List accordingly.
November 22–
November 25, 2012
  FINALLY made some long-awaited updates to a few of the route listings on the site, including:

Also added a Niles Area Highways: 2010– map showing an overview of the highways in the Niles area.

November 19, 2012   Updated, corrected and augmented the information on the Great Lakes Circle Tours, Lake Michigan Circle Tour, and Lake Superior Circle Tour pages.
January 2, 2012   Corrected the "contact" e-mail address on the Corrections & Feedback page. Also added the "As featured in the 'Webwatcher' column of the January/February 2012 Michigan History magazine" blurb on the homepage.
December 6, 2011   Fixed an unfortunate gaffe with the domain name... it works again! Also updated the "contact" e-mail address in the footer at the bottom of each page. Minor modifications of the homepage text to reflect that the "recent" website redesign was actually several years ago.
November 21, 2008   Uploaded a new background image for the sitewide header graphic.
September 28, 2008   Updated the route length figures for ALL of the Intercounty (County-Desingated) Highways on all three listing pages: A-2 – C-81, D-19 – H-15, and H-16 – H-63. The mileages were calculated using State of Michigan data to one-thousandth of a mile, then rounded to the nearest one-hundredth of a mile as per the existing conventions on this site.
June 24, 2008   Updated the M-107 Route Listing to reflect its transfer to local control on June 4, as well as updating the Master List to show the change.
May 30, 2008   Added a page to the Photos section featuring new non-freeway Clearview trunkline signage in St Joseph Co.
May 5, 2008   Made several minor updates to the M-21 route listing.
April 9, 2008   Made some minor changes to the County Highways page, added some information to several listings on the County Highways A-2 - C-81 page, and some minor modifications to the county route marker descriptions on the Route Markers page.
January 1, 2008   Happy New Year! Made a few sitewide changes for the New Year, including updating the copyright in the footer at the bottom of every page.
December 17, 2007   Verified all of the links on the Related Links page. Corrected broken or misdirected links as necessary.
December 15, 2007   Updated the M-121 route listing to change it's status from "former" to "current" with the redesignation of OLD M-21 between Zeeland and Grandville as M-121. Also updated references to the new M-121 on the M-21 route listing, the US-31: Ottawa County page and the Master List section. Removed OLD M-21 (Ottawa) from the Unsigned Trunklines page.
November 3, 2007   Updated the route listings for M-38 and M-64 to reflect the jurisdictional transfer of former trunkline segments related to the new Ontonagon River Bridge. Removed OLD M-38 and OLD M-64 from the Unsigned Trunklines page.
November 2, 2007   Updated the BS I-96 (Portland), I-96 and Master List 1918-Present pages to reflect the decommissioning and jurisdictional transfer of Portland's BS I-96 to local control.
July 8, 2007   Updated the BUS US-31 (Muskegon) route listing in response to the jurisdictional transfer in downtown Muskegon as well as the M-46 route listing because of the changes to its western terminus. Also updated the M-42 route listing with more changes resulting from its truncation to Manton in June.
June 15, 2007   Added the M-37 Scenic Heritage Route to the Heritage Routes page and also updated the M-37 route listing.
June 14, 2007   Updated the information in the M-42 route listing regarding the jurisdictional transfer of the Manton-to-Mesick segment. Also added a new OLD M-42 listing to the unsigned trunklines page.
May 28, 2007   Added additional information to the M-42 route listing about the pending jurisdictional transfer of the Manton-to-Mesick segment. Also updated the BUS US-131 (Grand Rapids) listing and made a minor correction to the OLD US-131 BR listing on the unsigned trunklines page.
May 27, 2007   Updated the M-42 route listing to reflect the pending jurisdictional transfer of the part of that route from Manton westerly to Mesick.
March 15, 2007   Updated the Unsigned Trunklines page to include the new OLD M-38 and OLD M-64 listings. Also augmented the County-Designated (Intercounty) Highways page with several photographs.
February 26, 2007   Updated the OLD I-69 (OLD M-78) route listing to reflect its truncation to Perry.
February 6, 2007   Corrected a slight error in the Unsigned Connectors section of the Unsigned Trunklines page. (Thanks, Tim!) Also added new information to the OLD I-69 (OLD M-78) unsigned trunkline route listing.
January 8, 2007   Added two links to an article in Michigan Historymagazine about the dedication of the Gerald R Ford Freeway to the I-196 route listing.
January 2, 2007   Happy New Year! Made a few sitewide changes for the New Year, including updating the copyright in the footer at the bottom of every page.
December 21, 2006   Updated the US-23 and BUS US-23 (Fenton) route listings as well as the Master List to reflect the decommissioning of BUS US-23 at Fenton.
December 14, 2006   Updated the information related to the 2004 Holland business route jurisdictional transfer on the following pages: Holland Business Routes: The Turnback and BL I-196 (Holland-Zeeland). Also updated the route listings for M-38, US-45 and M-64 to reflect the opening of the new Ontonagon River Bridge as well as updating the Ontonagon State Trunkline Changes 2006 map.
November 25, 2006   Updated the US-31 route listing, US-31 in Ottawa County article and Master List 1918-Present page with information on the proposed M-231, as well as created a new Future M-231 route listing.
November 2, 2006   Updated the M-36 route listing and the Historic US-27 (Page 2) listing with new historical information.
October 22, 2006   Made a few minor modifications to the Michigan Left page, corrected an incorrect link to the County Highways D-19—H-15 listings page on most of the other route listings pages, and completely overhauled the design of the Heritage Routes page. Also migrated the remaining route listing pages to the "new" page format introduced in October 2005, verifying all external links and correcting invalid ones:
October 9, 2006   Migrated the following pages to the "new" page format introduced in October 2005, verifying all external links and correcting invalid ones:
October 8, 2006   Created new route marker graphics for the three-digit US Highways (US-127, US-131, US-141 and US-223) and migrated the following pages to the "new" page format introduced in October 2005, verifying all external links and correcting invalid ones:
October 7, 2006   Migrated the Highway Listings 80-89 and Highway Listings 90-99 pages to the "new" page format introduced in October 2005. In the process, various external links were verified and corrected, if necessary.
October 6, 2006   Even more updates today:
October 5, 2006   Several more updates today:
October 4, 2006   Several updates today:
  • Updated the Heritage Routes page, adding new links, fixing broken ones and calculating mileages.
  • Added information to the US-41 route listing regarding the Scenic Heritage Route and National Scenic Byway designations.
  • Migrated the Highway Listings 30-39 page to the "new" page format introduced in October 2005. In the process, various external links were verified and corrected, if necessary.
September 25, 2006   Minor update to the History section of the M-116 route listing.
September 24, 2006   Major addition to the site: a comprehensive article "The History of Roads in Michigan" by Dorothy Pohl & Norman Brown. Minor update to the Historical Overview page and added a new Photos page.
September 17, 2006   Added the M-26 at South Range photo pages with 22 pictures of the existing route of M-26 being superceeded by a new alignment in 2006.
September 12, 2006   Added the US-2 Is NOT A Freeway photo page with three pictures of new signs along US-2 WEST in St Ignace.
August 23, 2006   Updated two links, one each in the M-10 and US-12 route listings. Also added new information to the M-53 route listing.
August 5, 2006   Heavily-updated the H-58 route listing with new information. Updated the BUS US-23 (Fenton) listing as well. Also migrated the Highways 10-19 and Highways 20-29 pages to the new design style.
July 31, 2006   Added an historic photograph to the Historical Overview page.
July 17, 2006   Added the designation as the Purple Heart Trail to the I-69 route listing.
April 14, 2006   Updated Michigan Official Maps: Christopher Bessert Collection.
March 28, 2006   Updated the M-26 route listing with new infomation regarding a realignment project at South Range. Also uploaded a new overview map of the project to the Maps page.
March 25, 2006   Updated a link on the Related Links page.
March 14, 2006   Updated the listing for OLD M-65 on the Unsigned Trunklines page to reflect its transfer to local control on March 9.
February 27, 2006   Added Michigan Official Maps: Christopher Bessert Collection.
February 23, 2006   Updated the M-44 route listing with a new historical tidbit. (Thanks Dan M!)
January 12, 2006   Updated the US-41 route listing to reflect the completion of the Interstate Bridge project linking Menominee and Marinette, Wisc. Also made a few other corrections/updates to the US-41 and M-40 route listings.
January 7, 2006   Overhauled the Forest Highways page, converting it to the "new" Michgigan Highways website style from October 2005. Also converted the Highways 1-9 route listings page to the new style as well.
January 2, 2006   Happy New Year! Made a few sitewide changes for the New Year, including updating the copyright in the footer at the bottom of every page.
December 30, 2005   Updated the link to Eric Buchanan's Michigan Highways Photos website on the Related Links page.
December 9, 2005   Several changes/updated/additions today:
November 27, 2005   Completely overhauled and extensively revised the Unsigned Trunklines & Connectors page. Also corrected links in the M-1 route listing.
November 21, 2005   Made several changes and updates to the M-154 route listing.
November 19, 2005   Completely overhauled and updated the history section for the M-99 route listing as well as making several updates to the M-106 route listing.
November 17, 2005   Updated the M-168 listing to reflect its impending transfer to the Village of Elberta in 2010. Also updated the homepage and added a link and graphic for the MSP Winter Road Conditions website.
November 10, 2005   Added a brand-new map of Downtown Detroit Trunklines to the Maps section as well as linked from the M-1, M-3, M-10, US-12, M-85, I-375 and BS I-375 listings.
November 9, 2005   Added new entries to the history sections of the M-43 and US-131 route listings. Also added a one new link and updated the URL on another on the Links page; made a minor update to the M-185 route listing; corrected/updated information on the BUS US-131 (Manton) listing.
October 30, 2005   Uploaded Michigan State Trunkline Record Holders (PDF) and added a link to it on the Michigan's State Trunkline System page.
October 29, 2005   Added a map showing the County-Designated Highway Zone System to the County Highways page.
October 15–
October 26, 2005
  Updated the overall design of the entire website, including a new title graphic featuring the Mackinac Bridge, an updated set of navigation menus on the left side of most pages and some tweaks to the style sheets. Along with these changes, several pages were overhauled or updated, including:
October 14, 2005   Made a few corrections to the M-99 listing and the M-174 description on the Master List: 1918-Present. (Thanks Richard!) Also uploaded a new design for the homepage.
October 11, 2005   As a result of the several jurisdictional transfers in Marquette yesterday, the following route listings have been updated: M-553, M-554 and BUS US-41. Also updated with these changes is the Master List: 1918-Present.
October 4, 2005   Added information about a proposed trunkline extension to the M-32 and C-48 listings.
September 17, 2005   Added new or updated existing listings in the Master List 1918-Present page, including M-130 EXTENSION (new), M-170 (new), M-172 (new), M-173 (updated), and M-218 (updated). Also added some new historical information to the M-117 listing and added a new OLD US-127 listing to the Unsigned Trunklines page.
September 12, 2005   Added a new link to Eric Buchanan's Michigan Highways Photos website and updated another link on the Related Links page. Also added a new photograph to Page 2 of the Michigan Left pages and additional text on the primary Michigan Left page.
August 23, 2005   Added a link to Nathan Holth's Historic Bridges of Michigan and Elsewhere site to the Related Links page. Also made several minor corrections to the Master List: 1918-Present page.
August 21, 2005   Completely overhauled the History section in the US-31 route listing, literally quadrupling the amount of information presented.
August 16, 2005   Added two new articles to the In-Depth section (also linked from the US-31 listing): Also added a brand-new H-11 listing to the D-19 - H-15 page and also updated the H-13 and H-58 listings. (Thanks Robert!)
August 11, 2005   Updated the History section of the M-1 listing with a jurisdictional transfer date. (Thanks Patrick!)
July 20, 2005   Uploaded a brand-new page, M-26: Eagle River Timber Bridge (1991), to the In Depth section.
July 19, 2005   Added links to Kevin Musser's "Three Spans over the Portage" article about the Houghton-Hancock Lift Bridge to the M-26 listing, US-41 listing and the Related Links page (Michigan's Bridges & Ferries section).
July 18, 2005   Added some new/updated information to the history portion of the M-78 route listings.
July 16, 2005   Made the following changes:
July 14, 2005   Minor corrections made to the M-311 listing. (Thanks A.J.!)
July 3, 2005   Revamped and revised Historic Auto Trails: Page 2, including adding representations of the auto trails markers and pole markings.
June 18, 2005   Added a link to the Route Markers page leading to the Michigan's Changing Route Marker Styles page at Barry Camp's website.
June 12, 2005   Completed the following:
June 11, 2005   Fixed a few typos in the C-58 route listing. (Thanks, Robert!) Also made minor updates/corrections to the M-17 and BUS US-23 (Ann Arbor) listings. (Thanks, Eric!)
June 9, 2005   Updated the US-12 listing to reflect the jurisdictional transfer of a portion of the route in Detroit on June 8th. Also completed revisions to the following listings or pages to reflect jurisdictional transfers in the City of Holland:
May 6, 2005   Updated the M-37 listing to reflect the jurisdictional transfer of a portion of the route in Battle Creek two days prior.
May 4, 2005   With the debut of a brand-new BUS US-31 route at Ludington, the following listings were revised: BUS US-31 (Ludington), US-31 listing, and OLD US-31 listing.
April 30, 2005   Added information to the M-37 listing regarding a pending jurisdictional transfer in Battle Creek and also added a link to the M-37: Hastings-Battle Creek page to the same listing.
April 23, 2005   Added Michigan's Route Markers: The Clearview Future? to illustrate what the state's route markers may look like in the future;
Added information about the Lodge Frwy's new exit numbers to the M-10 listing;
Added information regarding the impending jurisdictional transfers impacting US-41, BUS US-41, M-553 and M-554 in the City of Marquette to those respective listings.
Updated the Lake Michigan Circle Tour page and US-10 listing to reflect the removal/decommissioning of the LMCT Loop route through downtown Scottville.
April 17, 2005   Fixed a few inconsistencies in the US-31 history listing. (Thanks Robert!)
March 23, 2005   Added an updated length to the M-3 listing and fixed several other minor errors. (Thanks A.J.!)
March 20, 2005   Updated the Unsigned Trunklines page to reflect the turnback of the rest of OLD M-21 in St Clair Co.
February 23, 2005   Updated the I-69 route listing and the Recreational Heritage Route listing on the Heritage Routes page with new information regarding the addition of I-69 as such a route.
February 7, 2005   Added a new link to the Links page.
January 23, 2005   Minor changes to the Lake Michigan Circle Tour and Lake Superior Circle Tour pages.
January 18, 2005   Minor changes to the Unsigned Trunklines and Master List pages.
January 17, 2005   Added new information to the history section of the M-62 listing. Also added information about LeRoy Barnett's new book on the Memorial Highways page.
January 15, 2005   Added new information to the history sections of the M-3, M-35 and M-97 listings.
December 11, 2004   Minor updates to M-28, US-41, M-123 and M-203 route listings.
December 5, 2004   Made changes/corrections to the M-59 and BUS US-23 (Fenton) listings; also made additions to the still-unfinished Unsigned Trunklines page.
December 4, 2004   Finally added a page on the Michigan Polar-Equator Trail.
November 27, 2004   Added a new page cataloguing the various types of Michigan Route Markers. Also updated each of the Great Lakes Circle Tours pages with new route marker graphics: Lake Erie, Lake Huron, Lake Michigan and Lake Superior.
November 17, 2004   Updated the M-6/South Beltline listing to reflect the completion of that freeway as well as a three-page set of photographs from the ribbon-cutting ceremony.
November 11, 2004   Added information to the US-41 listing regarding the Interstate Bridge replacement project; included additional historical information in the US-131 and M-119 listings.
November 7, 2004   Uploaded new historical updates to the M-21 and M-51 route listings.
October 27, 2004   Added a new item to the history section to the M-99 listing.
October 26, 2004   Added clarifications regarding route termini to the US-24 and M-59 listings; updated the M-132 listing on the Master List: 1918-Present; updated nearly a dozen pages to change the "Connect to" links for routes entering Indiana to point to the Indiana Highway Ends site, including US-12, US-31, M-51, M-62, M-66, I-69, I-94, M-103, US-131, Former M-205 and M-239; updated the M-6 listing with some additional information.
October 24, 2004   Added the complete listings pages for the remaining two county-designated highway pages: D-19 through H-15 and H-16 through H-63.
October 17, 2004   Added the complete listings page for county-designated A-2 through C-81 as well as completed the Historical US-27 Overview page.
October 13, 2004   Completed the move of the Michigan Highways Master List 1918-Present from the old website to the new one. The Master List was completely overhauled, improved and updated and now features links to all of the individual highway listings.
October 10, 2004   Completed the Business 95-496 page, the last of the Business Connections pages! Also uploaded a page of Mackinac Straits Historical Photos. Also updated the M-65 listing.
September 25, 2004   Made several minor modifications to the US-131 and BUS US-31 (Holland) listings.
August 30, 2004   Completed the Business 32-94 page with the remaining route listings uploaded. Also verified, updated and corrected links in the various highway listings linking to Dan Garnell's Michigan Highway Ends website.
August 20-22, 2004   Uploaded the first two-thirds of the listings on the Business 32-94 page (from BUS M-32 through BS I-75 Sault Ste Marie); updated the BUS M-28 and BUS US-31 Holland listings; added the Holland Business Routes: The Turnback page to the In-Depth section.
August 14, 2004   Added a few additions to the US-31 listing; made typographical corrections to the US-10, M-22, M-66 and M-78 listings. (Thanks to John and Brian for the heads-up on those!)
July 28, 2004   Uploaded new Michigan Left: Photos & Plans page to accompany the existing Michigan Left-Hand Turn page. Also added navigation and made slight revision to main Michigan Left page.
July 18, 2004   Added a few clarifications and corrections to the US-131 history listing; added a new entry to the US-23 history listing; added information for the newly-designated US-12 Historic Heritage Route and US-23 Sunrise Side Coastal Highway in the US-12 and US-23 listings (respectively) and on the Heritage Routes page; also overhauled the Heritage Routes page with new graphics and information; made a few updates to the Historic US-16 Page 2 as well.
July 6, 2004   Uploaded complete Business Connections 2-31 page as well as minor corrections to Highways 200-229 page and a new graphic for the Michigan Left-Hand Turn page.
June 26, 2004   Minor correction to the M-59 listing on the Highways 50-59 page.
June 6, 2004   The Highways 250-696 page is completed, which completes the listing pages for all mainline routes. Also made an addition to the I-96 listing.
May 24, 2004   Updated the M-120 listing to more accurately reflect it being signed as an east-west highway in the field; added two new history listings to M-183 listing; uploaded the completed Highways 200-229 and Highways 230-249 pages.
May 21, 2004   Uploaded the fully-completed Highways 180-199 page.
May 20, 2004   Added two "historic" state trunkline planning maps from 1951 and 1968 to the Maps page.
May 13, 2004   Uploaded fully completed Highways 140-159 and Highways 160-179 pages and the first two listings (M-183 and M-185) on the Highways 180-199 page, added additional history information to M-120 listing, fixed broken links on Michigan's Trunklines page.
May 6, 2004   Debuted the Proposed M-37 Hastings-Battle Creek Expressway article in the In-Depth Section, including a Map of the proposed highway. Modified the M-37 and M-43 listings as well.
April 27, 2004   Minor correction on Historical Overview page, added link to US-23 listing and the Links page, and fixed a broken link in the M-20 listing.
April 22, 2004   Added an additional link to the Links page. Also make a slight update to the US-127 listing based on site contributor feedback.
April 10, 2004   Completely overhauled the Links page, tripling it in size and making it easier to navigate... hopefully.
April 9, 2004   Corrected a few items in the US-31 route listing on the Highways 30-39 page due to contributor feedback. Also made a minor correction on the About This Site page.
April 5, 2004   Completed the remainder of the listings on the Highways 129-139 page.
April 3, 2004   Added listings for M-120 through US-131/M-131 to the Highways 120-139 page.
April 1, 2004   Updated the history section for M-116 to include some newfound information.
March 24, 2004   Added the remainder of the route listings to the Highways 100-119 page as well as the beginnings of the Historic US-102 and Historic US-112 pages.
March 22, 2004   Added all of the listings to the Highways 90-99 page and the listings for M-100 through M-107 on the Highways 100-119 page.
March 15, 2004   Added all of the listings to the Highways 80-89 page.
March 14, 2004   Added all of the listings to the Highways 70-79 page.
February 28, 2004   Added the remaining listings to complete the Highways 60-69 page.
February 17, 2004   Added listings for M-61, M-62 and M-63 to the Highways 60-69 page. Also added updates/corrections to the US-31 and US-33 listings.
February 8, 2004   Added complete Highways 50-59 page.
January 18, 2004   Added the remaining listings (M-46, M-47, M-48 and M-49) to the Highways 40-49 page.
January 18, 2004   Added the M-43, M-44, US-45 and M-45 listings to the Highways 40-49 page.
January 14, 2004   Added the US-41 and M-42 listings to the Highways 40-49 page.
January 7, 2004   Added two new links to the Links page and updated several links to maps on the Maps page. Also added the first listing to the Highways 40-49 page.
December 26, 2003   Completed the Highways 30-39 page and added the M-35: The Highway Henry Ford Stopped article to the In Depth section.
November 11, 2003   Added the next three listings to the Highways 30-39 page and completed the Historic US-33 page.
November 9, 2003   Added the first two listings to the Highways 30-39 page and a Map of the US-31 Freeway in Berrien County to the Maps page.
November 1, 2003   Added the remaining route listings to the Highways 20-29 page as well as completed the Historic US-25 pages and much of the Historic US-27 pages.
October 22, 2003   Completed the Zilwaukee Bridge section of the website, including the inclusion of the entire 1987 MDOT report The Zilwaukee Bridge: From the Beginning.
October 17, 2003   Added two pages containing aerial imagery off the Zilwaukee Bridge main page. They are:
October 12, 2003   Updated the listing for M-8 in Detroit to include the date of jurisdictional transfer of the route to the state.
October 5, 2003   Added the first "Historic US Highway" page for US-16 and updated corresponding pages: Highways 10-19 and Listings page.
September 27, 2003   Corrected the Highways 1-9 page to reflect the 2001 route changes to M-3 in downtown Detroit. Also added two more route listings to the Highways 20-29 page.
September 26, 2003   Added the Highways 20-29 page with the first four route listings.
September 25, 2003   Added the Tug of War That is the US-23 Freeway page about the proposed "freeway-ization" of US-23 from Standish to Oscoda.
September 21, 2003   Added the final three listings to the Highways 10-19 page.
September 19, 2003   Added an updated map of the US-131 Manton Bypass to reflect its opening to traffic on that day.
September 16, 2003   Added the Highways 10-19 page with the first seven route listings. Also, uploaded new versions of the route marker symbols used in the website.
September 14, 2003   Added the Highways 1-9 page.
July 20, 2003   New website "officially" unveiled to general public.
Nov. 2002–July 2003   New website created.
November 24, 2002   Domain "michiganhighways.org" registered.
June 1997 through July 2003   Previous versions of website, hosted at AOL.