Structure 92674 · Lake County, MN

Csah 3 over West Split Rock River

Carries Csah 3 over West Split Rock River, 9.8 Mi SW Of Jct Csah 4.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 24 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built197056 years old
Length24.0 ft7.3 m
Daily traffic260counted 2022
Last inspectedAugust 2023every 24 months

Location

StateMinnesota
CountyLake
Location9.8 Mi SW Of Jct Csah 4
CarriesCsah 3
CrossesWest Split Rock River
Coordinates47.24202, -91.48076

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length24.0 ft (7.3 m)
Max Span20.0 ft (6.1 m)
Deck Area66.4 sq m
Main Spans1
Year Built1970

Traffic

Avg Daily Traffic260 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number92674

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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