Structure 69084 · St. Louis County, MN

US 169 over TH 73 NB

Carries US 169 over TH 73 NB, At The N Jct TH 169; 73.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

125 ft end to end. 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
Length124.7 ft38 m
Daily traffic3,990counted 2021
Last inspectedJune 2024every 24 months

Location

StateMinnesota
CountySt. Louis
LocationAt The N Jct TH 169; 73
CarriesUS 169
CrossesTH 73 NB
Coordinates47.48001, -92.89832

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length124.7 ft (38 m)
Max Span116.5 ft (35.5 m)
Deck Width44.3 ft (13.5 m)
Deck Area513 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic3,990 (2021)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number69084

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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