Structure B33010600000000 · Lafayette County, WI

Sth 11 over Shullsburg Branch

Carries Sth 11 over Shullsburg Branch, 0.8m E Cth I To N.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT144 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

144 ft end to end, longest span 57 ft: about 2 semi-trucks nose to tail. 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 slab bridge.

Built200521 years old
Length144.0 ft43.9 m
Daily traffic2,900counted 2022
Last inspectedDecember 2023every 24 months

Location

StateWisconsin
CountyLafayette
Location0.8m E Cth I To N
CarriesSth 11
CrossesShullsburg Branch
Coordinates42.56177, -90.33179

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length144.0 ft (43.9 m)
Max Span57.1 ft (17.4 m)
Deck Width46.6 ft (14.2 m)
Deck Area623.4 sq m
Main Spans3
Year Built2005

Traffic

Avg Daily Traffic2,900 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure NumberB33010600000000

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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