Structure 58J27 · Pine County, MN

Csah 24 over Lower Tamarack River

Carries Csah 24 over Lower Tamarack River, 0.4 Mi S Of Jct Csah 32.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 49 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built201016 years old
Length48.6 ft14.8 m
Daily traffic64counted 2021
Last inspectedSeptember 2021every 48 months

Location

StateMinnesota
CountyPine
Location0.4 Mi S Of Jct Csah 32
CarriesCsah 24
CrossesLower Tamarack River
Coordinates46.18020, -92.50900

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length48.6 ft (14.8 m)
Max Span14.8 ft (4.5 m)
Deck Area162.8 sq m
Main Spans3
Year Built2010

Traffic

Avg Daily Traffic64 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number58J27

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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