Structure 3652 · Huron County, MI

Caro Road over Kemp Drain

Carries Caro Road over Kemp Drain, Sec. 28-29 Sebewaing Twp..

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 4/9 · sets the rating

30 ft end to end. Lengths and the car 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.

Built1931rebuilt 1979
Length29.9 ft9.1 m
Daily traffic100counted 2009
Last inspectedSeptember 2024every 12 months

Location

StateMichigan
CountyHuron
LocationSec. 28-29 Sebewaing Twp.
CarriesCaro Road
CrossesKemp Drain
Coordinates43.68492, -83.43430

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length29.9 ft (9.1 m)
Max Span28.9 ft (8.8 m)
Deck Width27.2 ft (8.3 m)
Deck Area75.5 sq m
Main Spans1
Year Built1931 (reconstructed 1979)

Traffic

Avg Daily Traffic100 (2009)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000003652

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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