Structure 11151 · Wayne County, MI

I-94 WB over M-39

Carries I-94 WB over M-39, In Allen Park.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT845 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

845 ft end to end, longest span 86 ft: about 2.3 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built198442 years old
Length845.5 ft257.7 m
Daily traffic71,546counted 2007
Last inspectedNovember 2024every 24 months

Location

StateMichigan
CountyWayne
LocationIn Allen Park
CarriesI-94 WB
CrossesM-39
Coordinates42.26758, -83.22196

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length845.5 ft (257.7 m)
Max Span86.0 ft (26.2 m)
Deck Width72.2 ft (22 m)
Deck Area5669.4 sq m
Main Spans4
Year Built1984

Traffic

Avg Daily Traffic71,546 (2007)
Truck Traffic15%
Lanes On Bridge4
Lanes Under Bridge9

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011151

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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