Structure P13075100000000 · Dane County, WI

Lrd Marsh RD over Br Yahara River

Carries Lrd Marsh RD over Br Yahara River, 0.2m S Jct Ush 12.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
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 FT34 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

34 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.

Built193096 years old
Length34.1 ft10.4 m
Daily traffic406counted 2022
Last inspectedOctober 2024every 24 months

Location

StateWisconsin
CountyDane
Location0.2m S Jct Ush 12
CarriesLrd Marsh RD
CrossesBr Yahara River
Coordinates43.04544, -89.28669

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length34.1 ft (10.4 m)
Max Span32.2 ft (9.8 m)
Deck Width22.6 ft (6.9 m)
Deck Area71.8 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic406 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberP13075100000000

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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