Structure 1246 · Calhoun County, MI

I-94 EB over Gtw Rr

Carries I-94 EB over Gtw Rr, 0.5 Mi E Of Kalamazoo Col.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT192 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

192 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.

Built195967 years old
Length191.9 ft58.5 m
Daily traffic24,098counted 2007
Last inspectedJuly 2023every 24 months

Location

StateMichigan
CountyCalhoun
Location0.5 Mi E Of Kalamazoo Col
CarriesI-94 EB
CrossesGtw Rr
Coordinates42.27082, -85.28717

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length191.9 ft (58.5 m)
Max Span72.5 ft (22.1 m)
Deck Width47.2 ft (14.4 m)
Deck Area842.4 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic24,098 (2007)
Truck Traffic22%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000001246

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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