Structure 50541 · Mower County, MN

Csah 13 over Deer Creek

Carries Csah 13 over Deer Creek, 1.4 Mi W Of Jct Csah 8.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT93 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 4/9 · sets the rating

93 ft end to end, longest span 31 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 channel-beam bridge.

Built197749 years old
Length93.2 ft28.4 m
Daily traffic90counted 2016
Last inspectedAugust 2024every 12 months

Location

StateMinnesota
CountyMower
Location1.4 Mi W Of Jct Csah 8
CarriesCsah 13
CrossesDeer Creek
Coordinates43.68122, -92.59762

Physical Characteristics

MaterialPrestressed Concrete
DesignChannel Beam
Total Length93.2 ft (28.4 m)
Max Span31.2 ft (9.5 m)
Deck Width38.1 ft (11.6 m)
Deck Area329.4 sq m
Main Spans3
Year Built1977

Traffic

Avg Daily Traffic90 (2016)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number50541

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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