US Bridges

I-94 & I-69 WB over Black River & Scott Ave

Fair

St. Clair County, Michigan · W City Limits · Structure no. 000000000013581

Built
2011
14 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,353 ft
10 main spans
Daily traffic
26,010
2010 count
Owner
State
State Highway Agency

About this bridge

I-94 & I-69 WB over Black River & Scott Ave is a prestressed concrete stringer/multi-beam or girder carrying I-94 & I-69 WB over Black River & Scott Ave in St. Clair County, Michigan. It was built in 2011, so it is 14 years old, younger 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 26,010 vehicles a day, roughly 16% of them trucks, projected to reach 30,600 by 2030. The structure is 1,353 ft (412.3 m) long and 63 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-94 & I-69 WB
CrossesBlack River & Scott Ave
LocationW City Limits
RouteInterstate 94
CountySt. Clair County
StateMichigan
Coordinates42.99516, -82.44448
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating65.7 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10 (+1 approach)
Design loadGreater than HL 93
Structure length1,353 ft (412.3 m)
Longest span143 ft (43.6 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,010 (2010)
Projected traffic30,600 by 2030
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-94 & I-69 WB over Black River & Scott Ave built?

It was built in 2011, making it 14 years old in 2025.

What condition is I-94 & I-69 WB over Black River & Scott Ave 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 I-94 & I-69 WB over Black River & Scott Ave carry?

About 26,010 vehicles per day (2010 count), of which roughly 16% are trucks.

How long is I-94 & I-69 WB over Black River & Scott Ave?

The structure is 1,353 ft (412.3 m) long with a longest span of 143 ft (43.6 m) and a deck 63 ft wide.

Who owns I-94 & I-69 WB over Black River & Scott Ave?

It is owned by the State Highway Agency.