Structure B55094200000000 · St. Croix County, WI

Cth Q over Willow River

Carries Cth Q over Willow River, 0.6m E Jct Ush 63.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

47 ft end to end. Lengths and the car 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.

Built1915111 years old
Length47.2 ft14.4 m
Daily traffic226counted 2022
Last inspectedOctober 2023every 24 months

Location

StateWisconsin
CountySt. Croix
Location0.6m E Jct Ush 63
CarriesCth Q
CrossesWillow River
Coordinates45.19459, -92.27026

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length47.2 ft (14.4 m)
Max Span44.3 ft (13.5 m)
Deck Width33.1 ft (10.1 m)
Deck Area145.4 sq m
Main Spans1
Year Built1915

Traffic

Avg Daily Traffic226 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB55094200000000

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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