Structure 46546 · Martin County, MN

T 174 over Cedar Run

Carries T 174 over Cedar Run, 0.5 Mi E Of Jct Csah 9.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

72 ft end to end, longest span 24 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 slab bridge.

Built197947 years old
Length71.9 ft21.9 m
Daily traffic12counted 1986
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyMartin
Location0.5 Mi E Of Jct Csah 9
CarriesT 174
CrossesCedar Run
Coordinates43.79067, -94.76441

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length71.9 ft (21.9 m)
Max Span24.0 ft (7.3 m)
Deck Width29.9 ft (9.1 m)
Deck Area199.3 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic12 (1986)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number46546

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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