Structure 1301 · Calhoun County, MI

L DR So over S Br Kalamazoo River

Carries L DR So over S Br Kalamazoo River, Albion Twp Sec 32.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 3 of 9.

How ratings work
Deck4/9 · Poor
Superstructuresets the rating3/9 · Serious
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT90 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 3/9 · sets the ratingSubstructure 6/9

90 ft end to end, longest span 45 ft. 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 box-beam bridge.

Built196066 years old
Length89.9 ft27.4 m
Daily traffic1,130counted 1995
Last inspectedSeptember 2024every 12 months

Location

StateMichigan
CountyCalhoun
LocationAlbion Twp Sec 32
CarriesL DR So
CrossesS Br Kalamazoo River
Coordinates42.15937, -84.80510

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length89.9 ft (27.4 m)
Max Span44.9 ft (13.7 m)
Deck Width31.8 ft (9.7 m)
Deck Area265.8 sq m
Main Spans2
Year Built1960

Traffic

Avg Daily Traffic1,130 (1995)
Truck Traffic14%
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 Critical5 — Stable for scour
Structure Number000000000001301

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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