Structure B22014000000000 · Grant County, WI

Sth 81 over Flat Rock Creek

Carries Sth 81 over Flat Rock Creek, 2.4m E Jct Cth Y.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

65 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.

Built199927 years old
Length65.0 ft19.8 m
Daily traffic840counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateWisconsin
CountyGrant
Location2.4m E Jct Cth Y
CarriesSth 81
CrossesFlat Rock Creek
Coordinates42.76761, -90.93598

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length65.0 ft (19.8 m)
Max Span60.7 ft (18.5 m)
Deck Width38.4 ft (11.7 m)
Deck Area231.7 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic840 (2022)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberB22014000000000

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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