Structure 69865 · St. Louis County, MN

I 35 over Cn Rr

Carries I 35 over Cn Rr, 0.9 Mi SW Of Jct TH 535.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,090 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

1,090 ft end to end, longest span 130 ft: about 3.0 football fields. 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.

Built201115 years old
Length1089.9 ft332.2 m
Daily traffic22,000counted 2019
Last inspectedApril 2023every 24 months

Location

StateMinnesota
CountySt. Louis
Location0.9 Mi SW Of Jct TH 535
CarriesI 35
CrossesCn Rr
Coordinates46.75559, -92.13409

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1089.9 ft (332.2 m)
Max Span129.9 ft (39.6 m)
Deck Width45.3 ft (13.8 m)
Deck Area4584.4 sq m
Main Spans3
Year Built2011

Traffic

Avg Daily Traffic22,000 (2019)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number69865

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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