US Bridges

S SAGINAW(OLDM-54) over I-75

Fair

Genesee County, Michigan · @ Oakland County Line · Structure no. 000000000002625

Built
1962
63 years old, rebuilt 1980
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
309 ft
4 main spans
Daily traffic
8,800
1995 count
Owner
State
State Highway Agency

About this bridge

S SAGINAW(OLDM-54) over I-75 is a steel stringer/multi-beam or girder carrying S SAGINAW(OLDM-54) over I-75 in Genesee County, Michigan. It was built in 1962 and reconstructed in 1980, so it is 63 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 8,800 vehicles a day, roughly 5% of them trucks, projected to reach 999,999 by 2015. The structure is 309 ft (94.2 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS SAGINAW(OLDM-54)
CrossesI-75
Location@ Oakland County Line
RouteState Highway 54
CountyGenesee County
StateMichigan
Coordinates42.87358, -83.59674
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length309 ft (94.2 m)
Longest span100 ft (30.4 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (1995)
Projected traffic999,999 by 2015
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$125,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was S SAGINAW(OLDM-54) over I-75 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1980.

What condition is S SAGINAW(OLDM-54) over I-75 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 August 2024.

How much traffic does S SAGINAW(OLDM-54) over I-75 carry?

About 8,800 vehicles per day (1995 count), of which roughly 5% are trucks.

How long is S SAGINAW(OLDM-54) over I-75?

The structure is 309 ft (94.2 m) long with a longest span of 100 ft (30.4 m) and a deck 37 ft wide.

Who owns S SAGINAW(OLDM-54) over I-75?

It is owned by the State Highway Agency.