||Jct M-10 & BS
I-375 (cnr Randolph St & Jefferson Ave) in downtown Detroit.
||Jct I-94 & M-29 at
Exit 243 in Chesterfield Twp west of New Baltimore.
|| 27.2 miles
||Route Map of M-3
||Known as Gratiot Ave for most of its length. Before 1972, this route
was a portion of US-25 in Michigan.
||Until 1998, the northernmost 3.5 miles of M-3 were concurrently designated
with M-59. However, with the
completion of the M-59/Hall
Rd upgrade, the M-59 designation
was transferred from Gratiot Ave & 23 Mile Rd onto the portion of Hall
Rd east of Gratiot to I-94.
Gratiot and 23 Mile Rd north of Hall Rd is now designated only as M-3.
||1972 - With the removal of US-25 from
the state of Michigan, the former route of US-25 from
Detroit to Chesterfield Twp along Fort St, Gratiot Ave and 23 Mile
Rd is re-designated as M-3.
||1981 (Jan 28) - The former route of Sbd
M-3 through downtown Mount Clemens via Welts Ave and Gratiot Ave (from
Welts southerly to halfway between Robertson & Kibbee Sts) is turned
back to local control after a new westerly bypass of the downtown district
is completed. Sources indicate the new relocation of Sbd M-3 opened
the previous year, however. The former route of Sbd M-3 along Gratiot
Ave is also renamed Main St by the City of Mount Clemens.
||1998 - The final portion of the M-59 upgrade
is completed and the concurrent M-59 designation
is removed from M-3 north of Hall Rd, leaving the M-3 designation as
the sole route number there.
||2001 (Mar 15) - During a spate of jurisdictional
transfers in the City of Detroit, which included several former state
trunklines in the Campus Martius area of downtown being transferred
back to City of Detroit control, M-3 is actually severed into two discontinuous
portions. The two blocks of Cadillac Sq from Woodward Ave to Randolph
St designated as part of M-3, as well as Fort St between Woodward and
Griswold St, are transferred to the City of Detroit. (Please see the
jurisdictional transfer maps linked under "Weblinks" below.) This leaves
two issues, solved thusly:
- The discontinuous segment of M-3 along Fort St from Griswold
St westerly to Clark St, then northerly on Clark St to the I-75/Fisher
Frwy is redesignated as part of M-85.
This is possible as MDOT also assumes control of Fort St from
Clark St southwesterly to the former northern terminus of M-85.
The one block stretch of former M-3 from Fort St to I-75 is
an unsigned state trunkline connector.
- Since M-3 has been truncated to the cnr of Cadillac Sq & Randolph
St and since Randolph St from Cadillac Sq southerly to M-10/BS
I-375/Jefferson Ave is an unsigned state trunkline connector,
the M-3 designation is simply extended southerly via Randolph
to end at Jefferson.
||No portion of M-3 is freeway or expressway.
|| The entire length of M-3 is part of the NHS. (The segment of M-3 from its southern terminus at BS I-375/Jefferson Ave and the I-75 connector ramps northeast of downtown was added in 2012 with the passage of the MAP-21 funding and authorization bill.)