US Bridges

I-94 EB over I-94 Bl (gratiot)

Fair

St. Clair County, Michigan · @ I94BL (gratiot)- · Structure no. 000000000010007

Built
2006
19 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
176 ft
2 main spans
Daily traffic
7,908
2007 count
Owner
State
State Highway Agency

About this bridge

I-94 EB over I-94 Bl (gratiot) is a prestressed concrete stringer/multi-beam or girder carrying I-94 EB over I-94 Bl (gratiot) in St. Clair County, Michigan. It was built in 2006, so it is 19 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 7,908 vehicles a day, roughly 2% of them trucks, projected to reach 20,330 by 2026. The structure is 176 ft (53.6 m) long and 65 ft wide.

Location

Open in Google Maps
CarriesI-94 EB
CrossesI-94 Bl (gratiot)
Location@ I94BL (gratiot)-
RouteInterstate 94
CountySt. Clair County
StateMichigan
Coordinates42.90749, -82.5051
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.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length176 ft (53.6 m)
Longest span93 ft (28.3 m)
Deck width65 ft (19.9 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,908 (2007)
Projected traffic20,330 by 2026
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 EB over I-94 Bl (gratiot) built?

It was built in 2006, making it 19 years old in 2025.

What condition is I-94 EB over I-94 Bl (gratiot) 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 EB over I-94 Bl (gratiot) carry?

About 7,908 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is I-94 EB over I-94 Bl (gratiot)?

The structure is 176 ft (53.6 m) long with a longest span of 93 ft (28.3 m) and a deck 65 ft wide.

Who owns I-94 EB over I-94 Bl (gratiot)?

It is owned by the State Highway Agency.