US Bridges

I-94 WB over Mill Creek

Fair

Washtenaw County, Michigan · 3.3 MI E of M-52 · Structure no. 000000000010926

Built
1961
64 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
28,818
2007 count
Owner
State
State Highway Agency

About this bridge

I-94 WB over Mill Creek is a concrete tee beam carrying I-94 WB over Mill Creek in Washtenaw County, Michigan. It was built in 1961, so it is 64 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 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 28,818 vehicles a day, roughly 23% of them trucks, projected to reach 28,520 by 2018. The structure is 44 ft (13.4 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-94 WB
CrossesMill Creek
Location3.3 MI E of M-52
RouteInterstate 94
Coordinates42.29888, -83.96105
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length44 ft (13.4 m)
Longest span44 ft (13.4 m)
Deck width47 ft (14.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,818 (2007)
Projected traffic28,520 by 2018
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-94 WB over Mill Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-94 WB over Mill Creek 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 June 2024.

How much traffic does I-94 WB over Mill Creek carry?

About 28,818 vehicles per day (2007 count), of which roughly 23% are trucks.

How long is I-94 WB over Mill Creek?

The structure is 44 ft (13.4 m) long with a longest span of 44 ft (13.4 m) and a deck 47 ft wide.

Who owns I-94 WB over Mill Creek?

It is owned by the State Highway Agency.