Structure 92571 · Cass County, MN

Csah 5 over Boy River

Carries Csah 5 over Boy River, 0.3 Mi E Of Jct Csah 11.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 20 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.

Built196957 years old
Length20.3 ft6.2 m
Daily traffic790counted 2019
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyCass
Location0.3 Mi E Of Jct Csah 11
CarriesCsah 5
CrossesBoy River
Coordinates46.94169, -94.33127

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length20.3 ft (6.2 m)
Max Span20.3 ft (6.2 m)
Deck Area68.2 sq m
Main Spans1
Year Built1969

Traffic

Avg Daily Traffic790 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number92571

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.