Structure 7534 · Montcalm County, MI

Old Us-131 over Tamarack CR

Carries Old Us-131 over Tamarack CR, In Howard City.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

50 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.

Built1928rebuilt 1977
Length49.9 ft15.2 m
Daily traffic8,200counted 2003
Last inspectedOctober 2024every 24 months

Location

StateMichigan
CountyMontcalm
LocationIn Howard City
CarriesOld Us-131
CrossesTamarack CR
Coordinates43.40095, -85.46871

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length49.9 ft (15.2 m)
Max Span49.9 ft (15.2 m)
Deck Width49.5 ft (15.1 m)
Deck Area229.5 sq m
Main Spans1
Year Built1928 (reconstructed 1977)

Traffic

Avg Daily Traffic8,200 (2003)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000007534

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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