Structure 11576 · Wayne County, MI

Grand River AVE over I-96

Carries Grand River AVE over I-96, In Detroit.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT307 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

307 ft end to end, longest span 158 ft: about 4 semi-trucks nose to tail. 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.

Built1972rebuilt 2009
Length306.8 ft93.5 m
Daily traffic19,650counted 2007
Last inspectedSeptember 2024every 24 months

Location

StateMichigan
CountyWayne
LocationIn Detroit
CarriesGrand River AVE
CrossesI-96
Coordinates42.37115, -83.14497

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length306.8 ft (93.5 m)
Max Span157.8 ft (48.1 m)
Deck Width106.3 ft (32.4 m)
Deck Area3029.4 sq m
Main Spans2
Year Built1972 (reconstructed 2009)

Traffic

Avg Daily Traffic19,650 (2007)
Truck Traffic4%
Lanes On Bridge7
Lanes Under Bridge8

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011576

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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