US Bridges

Third Ave over I-75

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011775

Built
1967
58 years old, rebuilt 1998
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
170 ft
2 main spans
Daily traffic
6,769
2010 count
Owner
State
State Highway Agency

About this bridge

Third Ave over I-75 is a steel continuous stringer/multi-beam or girder carrying Third Ave over I-75 in Wayne County, Michigan. It was built in 1967 and reconstructed in 1998, so it is 58 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 6,769 vehicles a day, roughly 3% of them trucks, projected to reach 7,446 by 2025. The structure is 170 ft (51.8 m) long and 72 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesThird Ave
CrossesI-75
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.3362, -83.06007
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span87 ft (26.5 m)
Deck width72 ft (21.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,769 (2010)
Projected traffic7,446 by 2025
Trucks3%
Lanes on structure4
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 Third Ave over I-75 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1998.

What condition is Third 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 May 2024.

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

About 6,769 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is Third Ave over I-75?

The structure is 170 ft (51.8 m) long with a longest span of 87 ft (26.5 m) and a deck 72 ft wide.

Who owns Third Ave over I-75?

It is owned by the State Highway Agency.