Structure 11177 · Wayne County, MI

Junction ST over I-94

Carries Junction ST over I-94, In Detroit.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

171 ft end to end, longest span 57 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 multi-beam bridge.

Built1950rebuilt 1996
Length171.3 ft52.2 m
Daily traffic3,500counted 1994
Last inspectedJune 2024every 24 months

Location

StateMichigan
CountyWayne
LocationIn Detroit
CarriesJunction ST
CrossesI-94
Coordinates42.34032, -83.11836

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length171.3 ft (52.2 m)
Max Span56.8 ft (17.3 m)
Deck Width57.7 ft (17.6 m)
Deck Area918.7 sq m
Main Spans4
Year Built1950 (reconstructed 1996)

Traffic

Avg Daily Traffic3,500 (1994)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011177

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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