Structure 12214 · Wayne County, MI

Jefferson Avenue over Rouge River

Carries Jefferson Avenue over Rouge River, Det&rivrrgen/schaefer.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT248 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

248 ft end to end, longest span 91 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 bascule bridge (drawn closed).

Built1922rebuilt 1982
Length248.0 ft75.6 m
Daily traffic10,938counted 1999
Last inspectedApril 2024every 12 months

Location

StateMichigan
CountyWayne
LocationDet&rivrrgen/schaefer
CarriesJefferson Avenue
CrossesRouge River
Coordinates42.28096, -83.12865

Physical Characteristics

MaterialSteel
DesignMovable - Bascule
Total Length248.0 ft (75.6 m)
Max Span90.9 ft (27.7 m)
Deck Width69.9 ft (21.3 m)
Deck Area1610.3 sq m
Main Spans2
Year Built1922 (reconstructed 1982)

Traffic

Avg Daily Traffic10,938 (1999)
Truck Traffic7%
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical5 — Stable for scour
Structure Number000000000012214

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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