Structure B13020600000000 · Dane County, WI

Sth 30 WB over Lrd Fair Oaks AVE

Carries Sth 30 WB over Lrd Fair Oaks AVE, 0.9m W Jct Ush 51 To N.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT145 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

145 ft end to end, longest span 70 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 multi-beam bridge.

Built196462 years old
Length145.3 ft44.3 m
Daily traffic18,650counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateWisconsin
CountyDane
Location0.9m W Jct Ush 51 To N
CarriesSth 30 WB
CrossesLrd Fair Oaks AVE
Coordinates43.10673, -89.33034

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length145.3 ft (44.3 m)
Max Span69.9 ft (21.3 m)
Deck Width34.1 ft (10.4 m)
Deck Area460.7 sq m
Main Spans2
Year Built1964

Traffic

Avg Daily Traffic18,650 (2022)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberB13020600000000

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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