Structure 12167 · Wayne County, MI

Inkster Road over Lower Rouge River

Carries Inkster Road over Lower Rouge River, Inkster N/michigan.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 7/9 · sets the rating

89 ft end to end, longest span 43 ft. Lengths and the car 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.

Built1930rebuilt 1968
Length88.6 ft27 m
Daily traffic21,290counted 2024
Last inspectedFebruary 2025every 24 months

Location

StateMichigan
CountyWayne
LocationInkster N/michigan
CarriesInkster Road
CrossesLower Rouge River
Coordinates42.29727, -83.31023

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length88.6 ft (27 m)
Max Span43.0 ft (13.1 m)
Deck Width74.1 ft (22.6 m)
Deck Area610.2 sq m
Main Spans2
Year Built1930 (reconstructed 1968)

Traffic

Avg Daily Traffic21,290 (2024)
Truck Traffic4%
Lanes On Bridge5

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000012167

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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