Structure 5767 · Polk County, MN

Csah 1 over Red River Of The North

Carries Csah 1 over Red River Of The North, 2.5 Mi W Of Jct TH 75.

Overall conditionPoor

Set by its lowest-rated component: Deck at 0 of 9.

How ratings work
Decksets the rating0/9 · Failed
Superstructure1/9 · Imminent Failure
Substructure1/9 · Imminent Failure
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT362 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 0/9 · sets the ratingSuperstructure 1/9Substructure 1/9

362 ft end to end, longest span 177 ft: about 5 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 through truss.

Built193987 years old
Length361.9 ft110.3 m
Daily traffic205counted 2021
Last inspectedOctober 2024every 12 months

Location

StateMinnesota
CountyPolk
Location2.5 Mi W Of Jct TH 75
CarriesCsah 1
CrossesRed River Of The North
Coordinates47.52712, -96.87106

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length361.9 ft (110.3 m)
Max Span177.2 ft (54 m)
Deck Width25.9 ft (7.9 m)
Deck Area871.4 sq m
Main Spans2
Year Built1939

Traffic

Avg Daily Traffic205 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number5767

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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