US Bridges

Seward Avenue over M-10

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011429

Built
1954
71 years old, rebuilt 2000
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
143 ft
2 main spans
Daily traffic
3,190
2007 count
Owner
State
State Highway Agency

About this bridge

Seward Avenue over M-10 is a steel continuous stringer/multi-beam or girder carrying Seward Avenue over M-10 in Wayne County, Michigan. It was built in 1954 and reconstructed in 2000, so it is 71 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 3,190 vehicles a day, projected to reach 3,509 by 2022. The structure is 143 ft (43.6 m) long and 72 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSeward Avenue
CrossesM-10
LocationIn Detroit
RouteCity Street 0
CountyWayne County
StateMichigan
Coordinates42.37203, -83.08496
Functional classUrban Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span76 ft (23.1 m)
Deck width72 ft (21.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,190 (2007)
Projected traffic3,509 by 2022
Trucks0%
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$42,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seward Avenue over M-10 built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2000.

What condition is Seward Avenue over M-10 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 September 2024.

How much traffic does Seward Avenue over M-10 carry?

About 3,190 vehicles per day (2007 count).

How long is Seward Avenue over M-10?

The structure is 143 ft (43.6 m) long with a longest span of 76 ft (23.1 m) and a deck 72 ft wide.

Who owns Seward Avenue over M-10?

It is owned by the State Highway Agency.