Structure 12102 · Wayne County, MI

Rawsonville Road over Huron River

Carries Rawsonville Road over Huron River, Van Buren/wash Co S/i-94.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT153 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

153 ft end to end, longest span 51 ft: about 2 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.

Built198244 years old
Length152.9 ft46.6 m
Daily traffic12,900counted 2013
Last inspectedMarch 2023every 24 months

Location

StateMichigan
CountyWayne
LocationVan Buren/wash Co S/i-94
CarriesRawsonville Road
CrossesHuron River
Coordinates42.20916, -83.54343

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length152.9 ft (46.6 m)
Max Span50.9 ft (15.5 m)
Deck Width71.9 ft (21.9 m)
Deck Area1020.5 sq m
Main Spans3
Year Built1982

Traffic

Avg Daily Traffic12,900 (2013)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000012102

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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