Structure 82045 · Washington County, MN

Mn 36 over ST Croix River-th95-uprr

Carries Mn 36 over ST Croix River-th95-uprr, 0.09 M E Of Jct Th95.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
5,079 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

5,079 ft end to end, longest span 600 ft: about 14 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 cable-stayed bridge.

Built20179 years old
Length5079.1 ft1548.1 m
Daily traffic26,332counted 2022
Last inspectedAugust 2023every 24 months

Location

StateMinnesota
CountyWashington
Location0.09 M E Of Jct Th95
CarriesMn 36
CrossesST Croix River-th95-uprr
Coordinates45.04202, -92.78508

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStayed Girder
Total Length5079.1 ft (1548.1 m)
Max Span600.1 ft (182.9 m)
Deck Width98.4 ft (30 m)
Deck Area46,443 sq m
Main Spans6
Year Built2017

Traffic

Avg Daily Traffic26,332 (2022)
Truck Traffic8%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number82045

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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