Structure 69906 · St. Louis County, MN

US 53 over I 35

Carries US 53 over I 35, At Jct I 35.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT198 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

198 ft end to end, longest span 113 ft: about 3 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.

Built20242 years old
Length198.2 ft60.4 m
Daily traffic5,000counted 2020
Last inspectedJuly 2024every 24 months

Location

StateMinnesota
CountySt. Louis
LocationAt Jct I 35
CarriesUS 53
CrossesI 35
Coordinates46.76512, -92.12411

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length198.2 ft (60.4 m)
Max Span112.5 ft (34.3 m)
Deck Width69.9 ft (21.3 m)
Deck Area1286.5 sq m
Main Spans2
Year Built2024

Traffic

Avg Daily Traffic5,000 (2020)
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number69906

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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