Structure 69082 · St. Louis County, MN

US 169 over Dm;ir Ry (abandon)

Carries US 169 over Dm;ir Ry (abandon), 7.6 Mi E Of N Jct TH 73.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT154 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

154 ft end to end, longest span 50 ft: about 2 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.

Built197947 years old
Length153.9 ft46.9 m
Daily traffic4,600counted 2019
Last inspectedAugust 2024every 12 months

Location

StateMinnesota
CountySt. Louis
Location7.6 Mi E Of N Jct TH 73
CarriesUS 169
CrossesDm;ir Ry (abandon)
Coordinates47.49426, -92.74831

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length153.9 ft (46.9 m)
Max Span50.2 ft (15.3 m)
Deck Width44.3 ft (13.5 m)
Deck Area633.1 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic4,600 (2019)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number69082

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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