Interstate 475 Michigan

Interstate 475 Michigan
southern Flint, MI ↔ northern Flint, MI•16.90 miles

Overview

Interstate 475 forms an urban loop joining I-75 with Downtown Flint from the west. The freeway carries four lanes north to Exit 4 (Bristol Road), six lanes north to Exit 13 (Saginaw Street) and four lanes along the rural stretch west back to I-75. A four level interchange joins the below grade freeway with Interstate 69 amid ramps to Downtown.

Mileage by State

Michigan16.40 mi

Data Sources

December 31, 2025 Interstate Route Log and Finders List

History

The Michigan State Highway Department Recommenced Interstate Route Numbering in 1958 numbered the urban route for Interstate 75 at Flint as I-175. The State revised the numbering of loops and spurs to conform with the American Association of State Highway Officials (AASHO) recommendations of assigning odd number prefixes for spurs and even number prefixes for loops. Subsequent correspondence on August 15, 1958 reassigned the loop at Flint as Interstate 475, which AASHO concurred with on August 29, 1958.

Flint, MI - 1969 Map
The initial route of Interstate 475 proposed in 1969 replaced what was M-54 Business.
Flint, MI - 1974 Map
Construction was scheduled for completion on the six mile stretch of Interstate 475 leading north from Flint to Beecher at the end of 1979 (it was not opened until 1981). Attempts in 1974 were made to speed up the environmental impact statement from November 15 to September 1, with the Flint City Manager advocating for a June finish. Governor William Milliken indicated that the timetable could be sped up by 12 to 14 months had that occurred (The Argus-Press, 1974).

Interstate 475 was designated as a 17.5 mile long freeway through Flint in 1970 (Bessert, 2025). The second level of the stack interchange with Interstate 69 opened as part of the M-21 and M-78 freeway completed from Saginaw Street to Center Road on December 21, 1971 (The Owosso Argus-Press, 1971). Opening of the first two sections of the I-475 mainline occurred by 1973. The southern portion ran north 6.4 miles from I-75 to the freeway along M-21 near Downtown Flint. The northern 3.4 mile long segment connected I-75 east with Saginaw Street (Exit 13) (The Argus-Press, 1973). The remaining section of I-475 was finished in 1981 (Bessert, 2025).

North End Interstate 75 ‐ northern Flint, MI

Interstate 475 North at Interstate 75 U.S. 23

I-475 north at I-75/US 23 - Flint, MI

Interstate 475 returns to I-75, 1.5 miles west from the six ramp parclo interchange (Exit 15) with Clio Road. Clio Road leads south from Mount Morris Township to the Flint city line at Carpenter Road. Photo by Don Hargraves (09/15/02).

I-475 north at I-75/US 23 - Flint, MI I-475 north at I-75/US 23 - Mt. Morris Twp, MI I-475 north at I-75/US 23 - Mt. Morris Twp, MI

Interstate 75 U.S. 23 South at Interstate 475

I-75/US 23 south at I-475 - Mt. Morris Twp, MI

I-75/U.S. 23 was expanded from three to four lanes from M-57 (Exit 131) south to I-475 (Exit 125) in Summer 2002. Widening of northbound followed on the same stretch during Summer 2003. I-75 is ten lanes wide between Mt. Morris Road and Interstate 475. 11/06/09

I-75/US 23 south at I-475 - Mt. Morris Twp, MI I-75/US 23 south at I-475 - Mt. Morris Twp, MI I-75/US 23 south at I-475 - Mt. Morris Twp, MI I-75/US 23 south at I-475 - Mt. Morris Twp, MI

Interstate 75 U.S. 23 North at Interstate 475

I-75/US 23 north at I-475 - Mt. Morris Twp, MI

One mile south of Exit 125 at the Carpenter Road overpass on I-75/U.S. 23 north. Photo by Eric Stuve (07/24/14).

I-75/US 23 north at I-475 - Mt. Morris Twp, MI I-75/US 23 north at I-475 - Mt. Morris Twp, MI

North End – Past Views

Past Views Gallery (Tap to Expand / Collapse Section)

Interstate 475 at Interstate 75 U.S. 23

I-475 north at I-75/US 23 - 2002

This sign for I-75/U.S. 23 south was replaced by 2008 with an overhead using Clearview font. Photo by Don Hargraves (09/15/02).

I-475 north at I-75/US 23 - 2002 I-475 north at I-75/US 23 - 2002 I-75/US 23 south at I-475 - 2001

South End Interstate 75 ‐ southern Flint, MI

Interstate 475 South at Interstate 75

I-475 south at I-75 - Grand Blanc Twp, MI

Interstate 475 south converges with I-75, 27 miles from the city of Pontiac and 52 miles from the Motor City. Photo by Eric Stuve (07/21/14).

Interstate 75 North at Interstate 475

I-75 north at I-475 - Grand Blanc Twp, MI

The first sign for the wye interchange (Exit 111) with Interstate 475 on I-75 north appears at the south end of M-54. 11/06/09

I-75 north at I-475 - Grand Blanc Twp, MI I-75 north at I-475 - Grand Blanc Twp, MI I-75 north at I-475 - Grand Blanc Twp, MI I-75 north at I-475 - Grand Blanc Twp, MI

South End – Past Views

Past Views Gallery (Tap to Expand / Collapse Section)

Interstate 75 North at Interstate 475

I-75 north at I-475 - 2001

This diagrammatic overhead for Exit 111 was replaced by 2008 with separate panels for both I-75 and I-475 north. Photo by Eric Vander Yacht (06/01).

I-75 north at I-475 - 2001 I-75 north at I-475 - 2001 I-75 north at I-475 - 2001

References

  1. Bessert, C. (2025, December 4). Highways 250 through 696. Michigan Highways. Retrieved from https://www.michiganhighways.org/listings/MichHwys250-696.html#I-475
  2. Flint Freeway Finished Dec. 21. (1971, December 4). The Owosso Argus-Press.
  3. Michigan Freeway System Passes 1,500 Mile Mark. (1973, January 29). The Argus-Press.
  4. Flint Officials Hopeful Of Getting a Construction Speed-Up on I-475. (1974, March 19). The Argus-Press.
Updated July 26, 2021