Structure 45567 · Marshall County, MN

Csah 34 over Snake River

Carries Csah 34 over Snake River, 1.0 Mi N Of Jct TH 1.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

89 ft end to end, longest span 35 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 slab bridge.

Built200521 years old
Length88.6 ft27 m
Daily traffic230counted 2020
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyMarshall
Location1.0 Mi N Of Jct TH 1
CarriesCsah 34
CrossesSnake River
Coordinates48.20967, -96.71793

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length88.6 ft (27 m)
Max Span35.1 ft (10.7 m)
Deck Width39.4 ft (12 m)
Deck Area324 sq m
Main Spans3
Year Built2005

Traffic

Avg Daily Traffic230 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number45567

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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