Structure 69K94 · St. Louis County, MN

Csah 5 over Unnamed Stream

Carries Csah 5 over Unnamed Stream, 0.5 Mi S Of Jct TH 1.

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 overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 23 ft across with 2 openings. 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.

Built20224 years old
Length23.3 ft7.1 m
Daily traffic360counted 2019
Last inspectedAugust 2023every 48 months

Location

StateMinnesota
CountySt. Louis
Location0.5 Mi S Of Jct TH 1
CarriesCsah 5
CrossesUnnamed Stream
Coordinates47.85918, -93.06200

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length23.3 ft (7.1 m)
Max Span9.8 ft (3 m)
Deck Area69.6 sq m
Main Spans2
Year Built2022

Traffic

Avg Daily Traffic360 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number69K94

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.

Nearby Bridges