Structure 4965 · Kent County, MI

68th ST over Us-131

Carries 68th ST over Us-131, 0.4 Mi S Of Wyoming.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT206 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

206 ft end to end, longest span 59 ft: about 3 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 box-beam bridge.

Built200026 years old
Length206.4 ft62.9 m
Daily traffic22,905counted 1995
Last inspectedMay 2023every 24 months

Location

StateMichigan
CountyKent
Location0.4 Mi S Of Wyoming
Carries68th ST
CrossesUs-131
Coordinates42.84093, -85.67779

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Single/Spread
Total Length206.4 ft (62.9 m)
Max Span58.7 ft (17.9 m)
Deck Width76.4 ft (23.3 m)
Deck Area1465.6 sq m
Main Spans4
Year Built2000

Traffic

Avg Daily Traffic22,905 (1995)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000004965

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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