Structure 36J22 · Koochiching County, MN

Ut 367 over Rat Root River

Carries Ut 367 over Rat Root River, 7 Mi S Of US 53.

Overall conditionGood

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

How ratings work
Culvertsets the rating9/9 · Excellent
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 23 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.

Built20197 years old
Length23.0 ft7 m
Daily traffic1counted 2019
Last inspectedOctober 2024every 48 months

Location

StateMinnesota
CountyKoochiching
Location7 Mi S Of US 53
CarriesUt 367
CrossesRat Root River
Coordinates48.30702, -93.12623

Physical Characteristics

MaterialAluminum/Wrought Iron/Cast Iron
DesignCulvert
Total Length23.0 ft (7 m)
Max Span23.0 ft (7 m)
Deck Area42.7 sq m
Main Spans1
Year Built2019

Traffic

Avg Daily Traffic1 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerState Park/Forest Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number36J22

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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