US Bridges

I-75 over Court ST

Fair

Genesee County, Michigan · N of M-21 · Structure no. 000000000002500

Built
1957
68 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
3 main spans
Daily traffic
70,414
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 over Court ST is a steel stringer/multi-beam or girder carrying I-75 over Court ST in Genesee County, Michigan. It was built in 1957, so it is 68 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 70,414 vehicles a day, roughly 10% of them trucks, projected to reach 100,051 by 2018. The structure is 107 ft (32.6 m) long and 111 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesI-75
CrossesCourt ST
LocationN of M-21
RouteInterstate 75
CountyGenesee County
StateMichigan
Coordinates43.00689, -83.74874
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating70.8 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span41 ft (12.6 m)
Deck width111 ft (33.8 m)
Roadway width105 ft (32 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70,414 (2007)
Projected traffic100,051 by 2018
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over Court ST built?

It was built in 1957, making it 68 years old in 2025.

What condition is I-75 over Court 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 April 2024.

How much traffic does I-75 over Court ST carry?

About 70,414 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is I-75 over Court ST?

The structure is 107 ft (32.6 m) long with a longest span of 41 ft (12.6 m) and a deck 111 ft wide.

Who owns I-75 over Court ST?

It is owned by the State Highway Agency.