Structure 11906 · Wayne County, MI

W Huron River DR over I-275

Carries W Huron River DR over I-275, In Romulus.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT402 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

402 ft end to end, longest span 134 ft: about 6 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.

Built197452 years old
Length401.6 ft122.4 m
Daily traffic6,500counted 1977
Last inspectedSeptember 2023every 24 months

Location

StateMichigan
CountyWayne
LocationIn Romulus
CarriesW Huron River DR
CrossesI-275
Coordinates42.21575, -83.40967

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length401.6 ft (122.4 m)
Max Span134.2 ft (40.9 m)
Deck Width66.3 ft (20.2 m)
Deck Area2472.5 sq m
Main Spans4
Year Built1974

Traffic

Avg Daily Traffic6,500 (1977)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge7

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011906

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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