Structure 7435 · Montcalm County, MI

M-57 over Fish Creek

Carries M-57 over Fish Creek, W Of Carson City Limits.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

53 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 1953
Length52.8 ft16.1 m
Daily traffic5,487counted 2007
Last inspectedOctober 2023every 24 months

Location

StateMichigan
CountyMontcalm
LocationW Of Carson City Limits
CarriesM-57
CrossesFish Creek
Coordinates43.17717, -84.85646

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length52.8 ft (16.1 m)
Max Span52.8 ft (16.1 m)
Deck Width43.3 ft (13.2 m)
Deck Area212.5 sq m
Main Spans1
Year Built1931 (reconstructed 1953)

Traffic

Avg Daily Traffic5,487 (2007)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000007435

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.

Nearby Bridges