Structure 1312 · Calhoun County, MI

V DR N over Indian Creek

Carries V DR N over Indian Creek, Lee Twp Sec 6.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

26 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 slab bridge.

Built1968rebuilt 2019
Length25.9 ft7.9 m
Daily traffic550counted 1995
Last inspectedJuly 2023every 24 months

Location

StateMichigan
CountyCalhoun
LocationLee Twp Sec 6
CarriesV DR N
CrossesIndian Creek
Coordinates42.40683, -84.94188

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length25.9 ft (7.9 m)
Max Span25.9 ft (7.9 m)
Deck Width31.5 ft (9.6 m)
Deck Area75.8 sq m
Main Spans1
Year Built1968 (reconstructed 2019)

Traffic

Avg Daily Traffic550 (1995)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000001312

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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