Structure 13049 · Kent County, MI

Wilson AVE over M-6 Ramp G

Carries Wilson AVE over M-6 Ramp G, 1 Mi E Of Kent Co Line.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT276 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

276 ft end to end, longest span 138 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.

Built200224 years old
Length275.6 ft84 m
Daily traffic15,800counted 2000
Last inspectedSeptember 2024every 24 months

Location

StateMichigan
CountyKent
Location1 Mi E Of Kent Co Line
CarriesWilson AVE
CrossesM-6 Ramp G
Coordinates42.84858, -85.76262

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length275.6 ft (84 m)
Max Span137.8 ft (42 m)
Deck Width82.0 ft (25 m)
Deck Area2,100 sq m
Main Spans2
Year Built2002

Traffic

Avg Daily Traffic15,800 (2000)
Truck Traffic8%
Lanes On Bridge5
Lanes Under Bridge5

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 Number000000000013049

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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