Structure 50K87 · Mower County, MN

Csah 4 over Trib Little Cedar River

Carries Csah 4 over Trib Little Cedar River, 1.7 Mi W Of Jct Csah 7.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 27 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built20215 years old
Length27.2 ft8.3 m
Daily traffic340counted 2012
Last inspectedOctober 2021every 48 months

Location

StateMinnesota
CountyMower
Location1.7 Mi W Of Jct Csah 7
CarriesCsah 4
CrossesTrib Little Cedar River
Coordinates43.60129, -92.73409

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length27.2 ft (8.3 m)
Max Span12.5 ft (3.8 m)
Deck Area81.3 sq m
Main Spans2
Year Built2021

Traffic

Avg Daily Traffic340 (2012)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number50K87

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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