Structure B11008700000000 · Columbia County, WI

Sth 60 over Wisconsin River Overflow

Carries Sth 60 over Wisconsin River Overflow, 0.2m E Jct Sth 78 To N.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT107 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

107 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.

Built197155 years old
Length107.0 ft32.6 m
Daily traffic6,800counted 2021
Last inspectedMay 2023every 24 months

Location

StateWisconsin
CountyColumbia
Location0.2m E Jct Sth 78 To N
CarriesSth 60
CrossesWisconsin River Overflow
Coordinates43.29475, -89.71948

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length107.0 ft (32.6 m)
Max Span105.0 ft (32 m)
Deck Width51.5 ft (15.7 m)
Deck Area511.8 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic6,800 (2021)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB11008700000000

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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