Structure B64011700000000 · Walworth County, WI

IH 43 SB over Lrd Mound RD

Carries IH 43 SB over Lrd Mound RD, 3.6 Mi S Jct Sth 67.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT235 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

235 ft end to end, longest span 128 ft: about 3 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 multi-beam bridge.

Built197551 years old
Length235.2 ft71.7 m
Daily traffic10,950counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateWisconsin
CountyWalworth
Location3.6 Mi S Jct Sth 67
CarriesIH 43 SB
CrossesLrd Mound RD
Coordinates42.64053, -88.60556

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length235.2 ft (71.7 m)
Max Span127.6 ft (38.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area960.8 sq m
Main Spans3
Year Built1975

Traffic

Avg Daily Traffic10,950 (2022)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB64011700000000

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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