US Bridges

Ush 12 EB over Trib to Waunakee Marsh

Fair

Dane County, Wisconsin · 1.2M E JCT Sth 19 to West · Structure no. B13053700000000

Built
2003
22 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
16,700
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 12 EB over Trib to Waunakee Marsh is a concrete continuous culvert carrying Ush 12 EB over Trib to Waunakee Marsh in Dane County, Wisconsin. It was built in 2003, so it is 22 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 16,700 vehicles a day, projected to reach 20,040 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesUsh 12 EB
CrossesTrib to Waunakee Marsh
Location1.2M E JCT Sth 19 to West
RouteU.S. Route 12
CountyDane County
StateWisconsin
Coordinates43.19208, -89.57105
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,700 (2022)
Projected traffic20,040 by 2043
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ush 12 EB over Trib to Waunakee Marsh built?

It was built in 2003, making it 22 years old in 2025.

What condition is Ush 12 EB over Trib to Waunakee Marsh 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 September 2024.

How much traffic does Ush 12 EB over Trib to Waunakee Marsh carry?

About 16,700 vehicles per day (2022 count).

How long is Ush 12 EB over Trib to Waunakee Marsh?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Ush 12 EB over Trib to Waunakee Marsh?

It is owned by the State Highway Agency.