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| Capitol Loop is a de facto partially municipally-controlled, partially state-controlled highway route. |
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| Western Terminus: | I-496/R.E. Olds Frwy at Exit 5 (M-99/M L King Jr Blvd interchange) in Lansing west of downtown |
| Eastern Terminus: | I-496/R.E. Olds Frwy at Exit 7 (BL I-96/Cedar St-Larch St interchange) in Lansing on the southeast side of downtown |
| Lengths: |  2.243 miles (eastbound):
2.552 miles (westbound):
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| Map: |  Route Maps of CAPITOL LOOP (Lansing) |
| Notes: |  The Capitol Loop is one of Michigan's more unique highway routes for several reasons. First, it was the state's first state trunkline routes which did not have a (publicly-known) route number but was rather a named trunkline route from the outset. (It seemingly did have an internally-assigned trunkline designation within MDOT, though—see note below.) Second, since at least 2012, route markers at two key turns in the route through downtown Lansing had gone missing and were not replaced, thus rendering it very difficult for the motoring public to follow the route through the city. Third, and probably the most unique aspect, is that when MDOT transfered control of much of the route back to city control, the route markers along the Capitol Loop were not removed, nor was signage pointing to the route along I-496 through downtown Lansing removed. Removal of former trunkline route maker signage has, unforunately, been known to take an extended amount of time to be completed in similar route transfers in the past. However, the lack of change on both the former segments of trunkline transferred to the City of Lansing as well as along the portion which remain on the trunkline system concurrent with BL I-96 along Cedar and Larch Sts points to a potential agreement between MDOT and the CIty of Lansing to retain all Capitol Loop trunkline signage even though three-quarters of the road miles of the route are no longer under state jurisdiction. Regardless of the reasons for the lack of removal of the route markers along the Capitol Loop, at present it remains at least a de facto highway route maintained, in part, by the state and by the City of Lansing. Therefore, until any physical changes are made to route signage in the field in downtown Lansing, the Capitol Loop can be considered to be the only state highway route which is under both state and municipal control. |
| Information from MDOT about the Capitol Loop: The Capitol Loop [was] established in 1986 as part of a larger effort to revitalize Michigan’s Capitol city and the downtown area. It is one of several elements intended to create and enhance historic, cultural, educational, recreational and economic opportunities for visitors, businesses and residents in the Capitol Complex area. Other aspects which are already set in place include:
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| Two figures are shown for the length of the Capitol Loop since, depending on which direction the route is measured, there is a three-tenths mile difference in the lengths. Normally, route lengths on this website are measured along the east- or northbound sides of a route if any part of that route is divided or runs along separate roadways, as in a one-way pair. In this instance, the route of the westbound Capitol Loop begins one block farther west than the eastbound side and then traverses a longer route through downtown Lansing as well, so both lengths are shown here. For "official" purposes, as far as the Michigan Highways website goes, the eastbound length is the one used for recordkeeping purposes. | |
Unfortunately, while MDOT's signing of its state trunkline highways across the state often tends to be very complete and thorough, it seems signage along portions of the Capitol Loop in downtown Lansing disappeared at some crucial turns along the route. In an inspection of the route in December 2012 (re-verified in 2016, 2023 and 2025), the western third of the route—from the Captiol Building westerly and southerly to I-496 at Martin Luther King, Jr Blvd—was excellent and signage along the eastern third—from the Grand River easterly and southerly to I-496 at the Cedar-Larch Sts interchange—was acceptable. The following portions, however, were no longer signed:
 While what are referred to as "reassurance route markers"—those route markers posted alongside the highway following intersections and junctions with other highways that "reassure" motorists that they are still on the correct route—are important, the lack of "route turn assemblies"—route marker assemblies which indicate that a route turns onto a different street or highway—can cause confusion, especially when motorists unfamiliar with the area are trying to navigate along a signed route. See the Capitol Loop Route Map for details. While the March 2024 jurisdictional transfer of three-quarters of the route back to municipal control seemingly rendered the lack of signage along the route as a moot point, its retention as a partially municipally-controlled trunkline route means the unsigned turns remain as points of confusion for motorists attempting to follow the route. |
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| In the 2010s, the City of Lansing began converting portions of their downtown one-way street system into two-way facilities. As with many cities across the state, Lansing embraced the one-way concept in the 1950s and 1960s as a way to better move traffic through the downtown core. However, as with many transportation-related treatments, the pendulum tends to swing widely. So, as traffic movement and congestion relief gave way in the early 2000s to more pedestrian and "complete streets"-focused uses, some cities—Lansing included—jumped onto this bandwagon and reversed the one-way treatments in place for six decades or more in favor of two-way streets. At this time, the City began talks with MDOT on the possibility of either turning the streets in the Capitol Loop route to two-way traffic flow or to just transfer those streets back to city control. The latter became the eventual solution when, in late-March 2024, all of the street segments which were not also concurrently-designated with BL I-96 were turned back to the City. But while the formerly one-way portions of the Capitol Loop which are now under municipal control have been converted to two-way travel, all Capitol Loop signs remain along the route as they did prior to the transfer. Thus, eastbound Allegan St from Martin Luther King Jr Blvd to Grand Ave is signed as part of the Capitol Loop, while westbound Allegan St between those points is not. Similarly, westbound Ottawa St from Grand Ave to M.K.King Jr Blvd is signed as the Capitol Loop while the eastbound side is not. |
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 The Capitol Loop has also been designated on some MDOT maps and internal documents as "CL I-496" similar to a Business Loop, only with the word "Capitol" in place of "Business." (See map snippet from 1990 at right.) Formerly, the Capitol Loop was also known internally by MDOT as "Connector 81," a designation having no relation to its route number. Then in c.2006–2008, MDOT reassigned most of their internal connector designations, giving each a much more logical designation. As such, from c.2006–2008 until the partial transfer of jurisdiction in 2024, the Captiol Loop was then internally known as "Connector 496." |
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| History: | 1977 (Dec 1) – A dozen years before the creation of the Captiol Loop in Lansing, the northern terminus of M-99 is reconfigured into a one-way pair in the area of the I-496 interchange. Logan St (present-day Martin Luther King Jr Blvd) from St Joseph St (the I-496 wbd service drive) northerly to Kalamazoo St is transferred to state control and the northound route, while a new southbound connector is officially assumed into the trunkline system beginning at the cnr of Logan & Kalamazoo to the cnr of Birch St & St Joseph St (Birch St becomes the new sbd route of M-99 from St Joseph St southerly). While the M-99 markers officially end at I-496/US-27, the state trunkline itself extends northerly from the freeway via Logan-Birch to end at Kalamazoo St. |
| 1986 (July) – The first mentions of a "Capitol Loop" come in conjunction with public hearings on projects associated with the Governor's Capital City Revitalizaton Task Force which is soliciting "ideas on how downtown Lansing can serve its residents, government workers, tourists, conventioneers and business people in parking, pedestrian movement, traffic circulation, roadway entrances to the Capitol Complex and transit services," according to an MDOT spokesman. In addition to the proposed signed loop route leading motorists into and through downtown from I-496, the task force is also considering ideas such as a proposed Capitol Park, a state welcome center and historic renovation of the State Capitol building. | |
| 1989 (June 15)– The brand-new "Capitol Loop" route markers are unveiled to the public today in advance of their posting along the route of the loop in the coming days. The route marker, designed by an artist according to MDOT, features an image of the Capitol dome. While the signs go up along the route of the Capitol Loop at this point, the official transfer of the route from city to state control won't come for another four months. |
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| 1989 (Oct 13) – Four months after Capitol Loop route markers are erected through downtown lansing, the route technically comes under state control as it is officially established as a trunkline route and transferred from city to state control. From the northern end of state control where Logan & Birch meet at Kalamazoo St, Logan St from Kalamazoo northerly to Ottawa St is transferred to MDOT, as are Allegan & Ottawa Sts (Allegan serves ebd traffic, while Ottawa is signed for wbd) and Grand Ave between Allegan and Ottawa. Michigan Ave from Grand Ave easterly to nbd BUS US-27/wbd BL I-96/Larch St. The "loop" part of the Captiol Loop is completed by using the one-way pair of Cedar & Larch Sts from Michigan Ave southerly back to I-496. | |
| 1991 (June) – The portion of Logan St/MLKing Jr Blvd, signed as part of the Capitol Loop since 1989, from St Joseph St at I-496 northerly to north of Ionia St is completely reconstructed as a six-lane divided boulevard. It was the most controversial part of the entire Capitol Loop project as nearly 60 residences were removed to make way for the improved street alignment. | |
2024 (Mar 26) – All portions of the Capitol Loop not concurrently designated with other routes (e.g. BL I-96) are transferred to municipal control. The City of Lansing had been slowly converting some of its downtown one-way streets to two-way operation and had been in talks with MDOT to possibly regain control of the Capitol Loop streets to potentially convert those to two-way traffic as well. Instead of converting the trunkline streets to two-way travel, MDOT simply transfers jurisdiction of those streets (and several others) to municipal control. While initially assumed this would mean an end to the Capitol Loop route itself, neither MDOT nor the City of Lansing remove any Capitol Loop signage, signifying the route continues to exist, with approximately three-quarters of it as a municipally-controlled trunkline route—the only existing route of its kind in the state. The Capitol Loop street segments which are transferred to municipal control are:
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| Controlled-Access: | No portion of the Capitol Loop exists as freeway or expressway. |
| NHS: | The entirety of the Capitol Loop is on the National Highway System (NHS). (The portion of the route west of BL I-96/Cedar-Larch Sts to the western terminus at I-496 Exit 5 was added to the NHS in 2012 with the passage of the MAP-21 funding and authorization bill.) |
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