Structure 64011 · Redwood County, MN

US 71 over Cottonwood River

Carries US 71 over Cottonwood River, 2.8 Mi S Of Jct US 14.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT266 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

266 ft end to end, longest span 89 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built20215 years old
Length265.7 ft81 m
Daily traffic2,750counted 2019
Last inspectedOctober 2023every 24 months

Location

StateMinnesota
CountyRedwood
Location2.8 Mi S Of Jct US 14
CarriesUS 71
CrossesCottonwood River
Coordinates44.19875, -95.12123

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length265.7 ft (81 m)
Max Span88.9 ft (27.1 m)
Deck Width46.9 ft (14.3 m)
Deck Area1158.3 sq m
Main Spans3
Year Built2021

Traffic

Avg Daily Traffic2,750 (2019)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number64011

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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