Structure 12936 · Ottawa County, MI

M-6 WB Ramp C over I-196 EB

Carries M-6 WB Ramp C over I-196 EB, Georgetown Twp Sec 34.

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 FT187 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

187 ft end to end: 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.

Built200125 years old
Length186.7 ft56.9 m
Daily traffic16,313counted 2007
Last inspectedSeptember 2024every 24 months

Location

StateMichigan
CountyOttawa
LocationGeorgetown Twp Sec 34
CarriesM-6 WB Ramp C
CrossesI-196 EB
Coordinates42.86198, -85.82024

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length186.7 ft (56.9 m)
Max Span176.8 ft (53.9 m)
Deck Width46.6 ft (14.2 m)
Deck Area808.0 sq m
Main Spans1
Year Built2001

Traffic

Avg Daily Traffic16,313 (2007)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000012936

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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