Structure 33515 · Kanabec County, MN

Csah 3 over Snake River

Carries Csah 3 over Snake River, 0.5 Mi W Of Jct Csah 11.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT135 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

135 ft end to end, longest span 37 ft. 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 slab bridge.

Built198640 years old
Length134.5 ft41 m
Daily traffic1,100counted 2018
Last inspectedNovember 2023every 24 months

Location

StateMinnesota
CountyKanabec
Location0.5 Mi W Of Jct Csah 11
CarriesCsah 3
CrossesSnake River
Coordinates46.02463, -93.23096

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length134.5 ft (41 m)
Max Span37.1 ft (11.3 m)
Deck Width39.4 ft (12 m)
Deck Area492 sq m
Main Spans4
Year Built1986

Traffic

Avg Daily Traffic1,100 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number33515

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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