US Bridges

Clay Ave over I-75

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011844

Built
1969
56 years old, rebuilt 2007
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
204 ft
4 main spans
Daily traffic
7,460
1978 count
Owner
State
State Highway Agency

About this bridge

Clay Ave over I-75 is a steel stringer/multi-beam or girder carrying Clay Ave over I-75 in Wayne County, Michigan. It was built in 1969 and reconstructed in 2007, so it is 56 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 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 7,460 vehicles a day, roughly 3% of them trucks, projected to reach 6,560 by 2028. The structure is 204 ft (62.3 m) long and 105 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesClay Ave
CrossesI-75
LocationIn Detroit
RouteCity Street 0
CountyWayne County
StateMichigan
Coordinates42.37838, -83.06261
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length204 ft (62.3 m)
Longest span75 ft (22.9 m)
Deck width105 ft (32 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,460 (1978)
Projected traffic6,560 by 2028
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Clay Ave over I-75 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2007.

What condition is Clay Ave 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 April 2024.

How much traffic does Clay Ave over I-75 carry?

About 7,460 vehicles per day (1978 count), of which roughly 3% are trucks.

How long is Clay Ave over I-75?

The structure is 204 ft (62.3 m) long with a longest span of 75 ft (22.9 m) and a deck 105 ft wide.

Who owns Clay Ave over I-75?

It is owned by the State Highway Agency.