Structure B20000800000000 · Fond du Lac County, WI

Lrd Madison ST (ct over Rock River

Carries Lrd Madison ST (ct over Rock River, 0.3m N Jct Sth 49.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

113 ft end to end, longest span 53 ft. 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.

Built195076 years old
Length112.9 ft34.4 m
Daily traffic1,800counted 2021
Last inspectedJune 2024every 24 months

Location

StateWisconsin
CountyFond du Lac
Location0.3m N Jct Sth 49
CarriesLrd Madison ST (ct
CrossesRock River
Coordinates43.63768, -88.72979

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length112.9 ft (34.4 m)
Max Span53.1 ft (16.2 m)
Deck Width40.7 ft (12.4 m)
Deck Area426.6 sq m
Main Spans2
Year Built1950

Traffic

Avg Daily Traffic1,800 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB20000800000000

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.

Nearby Bridges