Structure 11959 · Wayne County, MI

I-275 NB over Csx Rr

Carries I-275 NB over Csx Rr, 1 Mi W Of Livonia.

Overall conditionGood

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

How ratings work
Deck8/9 · Very 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 FT206 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 7/9 · sets the rating

206 ft end to end, longest span 73 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 multi-beam bridge.

Built1972rebuilt 2012
Length206.0 ft62.8 m
Daily traffic63,759counted 2007
Last inspectedOctober 2024every 24 months

Location

StateMichigan
CountyWayne
Location1 Mi W Of Livonia
CarriesI-275 NB
CrossesCsx Rr
Coordinates42.34337, -83.44089

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length206.0 ft (62.8 m)
Max Span73.5 ft (22.4 m)
Deck Width61.4 ft (18.7 m)
Deck Area1174.4 sq m
Main Spans3
Year Built1972 (reconstructed 2012)

Traffic

Avg Daily Traffic63,759 (2007)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011959

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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