US Bridges

I-94 WB over Gtw RR

Fair

St. Clair County, Michigan · 0.6 MI W of M-21 · Structure no. 000000000009995

Built
2003
22 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
14,887
2007 count
Owner
State
State Highway Agency

About this bridge

I-94 WB over Gtw RR is a prestressed concrete box beam or girders - multiple carrying I-94 WB over Gtw RR in St. Clair County, Michigan. It was built in 2003, so it is 22 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 14,887 vehicles a day, roughly 12% of them trucks, projected to reach 17,163 by 2018. The structure is 90 ft (27.4 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-94 WB
CrossesGtw RR
Location0.6 MI W of M-21
RouteInterstate 94
Coordinates42.96231, -82.48986
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating62.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length90 ft (27.4 m)
Longest span85 ft (25.8 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,887 (2007)
Projected traffic17,163 by 2018
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-94 WB over Gtw RR built?

It was built in 2003, making it 22 years old in 2025.

What condition is I-94 WB over Gtw RR 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 August 2024.

How much traffic does I-94 WB over Gtw RR carry?

About 14,887 vehicles per day (2007 count), of which roughly 12% are trucks.

How long is I-94 WB over Gtw RR?

The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.8 m) and a deck 47 ft wide.

Who owns I-94 WB over Gtw RR?

It is owned by the State Highway Agency.