Structure 1783 · Clinton County, MI

I-96 Bl(grand Riv) over Csx Rr

Carries I-96 Bl(grand Riv) over Csx Rr, At Eaton Co Line.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT193 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

193 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.

Built193888 years old
Length193.2 ft58.9 m
Daily traffic10,600counted 2009
Last inspectedApril 2024every 24 months

Location

StateMichigan
CountyClinton
LocationAt Eaton Co Line
CarriesI-96 Bl(grand Riv)
CrossesCsx Rr
Coordinates42.77141, -84.60522

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length193.2 ft (58.9 m)
Max Span73.2 ft (22.3 m)
Deck Width53.1 ft (16.2 m)
Deck Area954.2 sq m
Main Spans3
Year Built1938

Traffic

Avg Daily Traffic10,600 (2009)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000001783

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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