Structure 11544 · Wayne County, MI

Greenfield RD over I-96 & Csx Rr

Carries Greenfield RD over I-96 & Csx Rr, In Detroit.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT329 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

329 ft end to end, longest span 71 ft: about 5 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.

Built197254 years old
Length328.7 ft100.2 m
Daily traffic33,000counted 1988
Last inspectedAugust 2023every 24 months

Location

StateMichigan
CountyWayne
LocationIn Detroit
CarriesGreenfield RD
CrossesI-96 & Csx Rr
Coordinates42.37889, -83.19803

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length328.7 ft (100.2 m)
Max Span70.9 ft (21.6 m)
Deck Width103.3 ft (31.5 m)
Deck Area3156.3 sq m
Main Spans5
Year Built1972

Traffic

Avg Daily Traffic33,000 (1988)
Lanes On Bridge7
Lanes Under Bridge16

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011544

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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