Structure 69818B · St. Louis County, MN

Con 5785 over Unstable Material

Carries Con 5785 over Unstable Material, 0.1 Mi SW Of Jct 5th AVE.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT333 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

333 ft end to end, longest span 55 ft: about 5 semi-trucks nose to tail. Lengths and the semi-truck 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built198541 years old
Length332.7 ft101.4 m
Daily traffic1,890counted 2021
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountySt. Louis
Location0.1 Mi SW Of Jct 5th AVE
CarriesCon 5785
CrossesUnstable Material
Coordinates46.78099, -92.10342

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length332.7 ft (101.4 m)
Max Span55.1 ft (16.8 m)
Deck Width23.6 ft (7.2 m)
Deck Area730.1 sq m
Main Spans6
Year Built1985

Traffic

Avg Daily Traffic1,890 (2021)
Truck Traffic11%
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number69818B

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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