US Bridges

Joseph Campau over M-8

Good

Wayne County, Michigan · In Detroit · Structure no. 000000000011379

Built
1971
54 years old, rebuilt 2009
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
170 ft
2 main spans
Daily traffic
17,760
1970 count
Owner
State
State Highway Agency

About this bridge

Joseph Campau over M-8 is a steel continuous stringer/multi-beam or girder carrying Joseph Campau over M-8 in Wayne County, Michigan. It was built in 1971 and reconstructed in 2009, so it is 54 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,760 vehicles a day, roughly 3% of them trucks, projected to reach 17,760 by 1977. The structure is 170 ft (51.8 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJoseph Campau
CrossesM-8
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.41313, -83.06884
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating78.6 US tons
Inventory rating47.2 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 span85 ft (25.9 m)
Deck width81 ft (24.8 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,760 (1970)
Projected traffic17,760 by 1977
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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Joseph Campau over M-8 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2009.

What condition is Joseph Campau over M-8 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Joseph Campau over M-8 carry?

About 17,760 vehicles per day (1970 count), of which roughly 3% are trucks.

How long is Joseph Campau over M-8?

The structure is 170 ft (51.8 m) long with a longest span of 85 ft (25.9 m) and a deck 81 ft wide.

Who owns Joseph Campau over M-8?

It is owned by the State Highway Agency.