US Bridges

M-54 (dort Hwy) over I-75 NB

Fair

Genesee County, Michigan · 2.0 MI SW of Grand Blanc · Structure no. 000000000002635

Built
1985
40 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
187 ft
3 main spans
Daily traffic
13,232
2007 count
Owner
State
State Highway Agency

About this bridge

M-54 (dort Hwy) over I-75 NB is a steel stringer/multi-beam or girder carrying M-54 (dort Hwy) over I-75 NB in Genesee County, Michigan. It was built in 1985, so it is 40 years old, younger 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 6 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 13,232 vehicles a day, roughly 7% of them trucks, projected to reach 14,557 by 2018. The structure is 187 ft (57 m) long and 59 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-54 (dort Hwy)
CrossesI-75 NB
Location2.0 MI SW of Grand Blanc
RouteState Highway 54
CountyGenesee County
StateMichigan
Coordinates42.90681, -83.6498
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length187 ft (57 m)
Longest span111 ft (33.8 m)
Deck width59 ft (18 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,232 (2007)
Projected traffic14,557 by 2018
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-54 (dort Hwy) over I-75 NB built?

It was built in 1985, making it 40 years old in 2025.

What condition is M-54 (dort Hwy) over I-75 NB 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 June 2024.

How much traffic does M-54 (dort Hwy) over I-75 NB carry?

About 13,232 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is M-54 (dort Hwy) over I-75 NB?

The structure is 187 ft (57 m) long with a longest span of 111 ft (33.8 m) and a deck 59 ft wide.

Who owns M-54 (dort Hwy) over I-75 NB?

It is owned by the State Highway Agency.