Structure 34006 · Kandiyohi County, MN

Csah 23 over US 71

Carries Csah 23 over US 71, 2.0 Mi NE Of S Jct TH 23.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT450 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

450 ft end to end, longest span 128 ft: about 6 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.

Built197749 years old
Length450.1 ft137.2 m
Daily traffic6,600counted 2018
Last inspectedOctober 2023every 24 months

Location

StateMinnesota
CountyKandiyohi
Location2.0 Mi NE Of S Jct TH 23
CarriesCsah 23
CrossesUS 71
Coordinates45.11054, -95.01506

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length450.1 ft (137.2 m)
Max Span128.0 ft (39 m)
Deck Width50.2 ft (15.3 m)
Deck Area2099.2 sq m
Main Spans4
Year Built1977

Traffic

Avg Daily Traffic6,600 (2018)
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number34006

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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