Structure B56011600000000 · Sauk County, WI

Lrd 2nd AVE over Baraboo River

Carries Lrd 2nd AVE over Baraboo River, 0.6m W Jct Sth 123.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT157 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

157 ft end to end, longest span 78 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.

Built199333 years old
Length157.2 ft47.9 m
Daily traffic3,552counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateWisconsin
CountySauk
Location0.6m W Jct Sth 123
CarriesLrd 2nd AVE
CrossesBaraboo River
Coordinates43.46914, -89.75650

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length157.2 ft (47.9 m)
Max Span77.8 ft (23.7 m)
Deck Width44.0 ft (13.4 m)
Deck Area641.9 sq m
Main Spans2
Year Built1993

Traffic

Avg Daily Traffic3,552 (2024)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB56011600000000

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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