US Bridges

Ush 51 SB over Lrd Siggelkow RD

Fair

Dane County, Wisconsin · 1.8M S JCT Ush 12 to W · Structure no. B13038800000000

Built
1992
33 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
153 ft
2 main spans
Daily traffic
13,200
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 51 SB over Lrd Siggelkow RD is a prestressed concrete continuous stringer/multi-beam or girder carrying Ush 51 SB over Lrd Siggelkow RD in Dane County, Wisconsin. It was built in 1992, so it is 33 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 13,200 vehicles a day, roughly 10% of them trucks, projected to reach 15,840 by 2042. The structure is 153 ft (46.6 m) long and 42 ft wide.

CarriesUsh 51 SB
CrossesLrd Siggelkow RD
Location1.8M S JCT Ush 12 to W
RouteU.S. Route 51
Coordinates43.02607, -89.29967
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span75 ft (23 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,200 (2022)
Projected traffic15,840 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ush 51 SB over Lrd Siggelkow RD built?

It was built in 1992, making it 33 years old in 2025.

What condition is Ush 51 SB over Lrd Siggelkow RD in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Ush 51 SB over Lrd Siggelkow RD carry?

About 13,200 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ush 51 SB over Lrd Siggelkow RD?

The structure is 153 ft (46.6 m) long with a longest span of 75 ft (23 m) and a deck 42 ft wide.

Who owns Ush 51 SB over Lrd Siggelkow RD?

It is owned by the State Highway Agency.