US Bridges

I-475 over M-54 Br (saginaw St)

Fair

Genesee County, Michigan · In Flint · Structure no. 000000000002654

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
165 ft
3 main spans
Daily traffic
59,000
2007 count
Owner
State
State Highway Agency

About this bridge

I-475 over M-54 Br (saginaw St) is a steel stringer/multi-beam or girder carrying I-475 over M-54 Br (saginaw St) in Genesee County, Michigan. It was built in 1971, so it is 54 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 59,000 vehicles a day, roughly 4% of them trucks, projected to reach 58,830 by 2018. The structure is 165 ft (50.3 m) long and 122 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-475
CrossesM-54 Br (saginaw St)
LocationIn Flint
RouteInterstate 475
CountyGenesee County
StateMichigan
Coordinates42.99503, -83.67751
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.2 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length165 ft (50.3 m)
Longest span90 ft (27.4 m)
Deck width122 ft (37.1 m)
Roadway width119 ft (36.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59,000 (2007)
Projected traffic58,830 by 2018
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-475 over M-54 Br (saginaw St) built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-475 over M-54 Br (saginaw St) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does I-475 over M-54 Br (saginaw St) carry?

About 59,000 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is I-475 over M-54 Br (saginaw St)?

The structure is 165 ft (50.3 m) long with a longest span of 90 ft (27.4 m) and a deck 122 ft wide.

Who owns I-475 over M-54 Br (saginaw St)?

It is owned by the State Highway Agency.