US Bridges

Ush 12-USH 18 over Door Creek

Fair

Dane County, Wisconsin · 0.9M E JCT Cth Ab (a) · Structure no. B13019700000000

Built
1961
64 years old, rebuilt 1998
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
14,200
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 12-USH 18 over Door Creek is a concrete continuous culvert carrying Ush 12-USH 18 over Door Creek in Dane County, Wisconsin. It was built in 1961 and reconstructed in 1998, so it is 64 years old, older 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 14,200 vehicles a day, roughly 11% of them trucks, projected to reach 17,040 by 2042. The structure is 40 ft (12.1 m) long. If it were closed, the detour would be 28.6 mi (46 km).

Location

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CarriesUsh 12-USH 18
CrossesDoor Creek
Location0.9M E JCT Cth Ab (a)
RouteU.S. Route 12
CountyDane County
StateWisconsin
Coordinates43.03635, -89.22983
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length40 ft (12.1 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 traffic14,200 (2022)
Projected traffic17,040 by 2042
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28.6 mi (46 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-USH 18 over Door Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1998.

What condition is Ush 12-USH 18 over Door Creek 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 2024.

How much traffic does Ush 12-USH 18 over Door Creek carry?

About 14,200 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ush 12-USH 18 over Door Creek?

The structure is 40 ft (12.1 m) long with a longest span of 12 ft (3.7 m).

Who owns Ush 12-USH 18 over Door Creek?

It is owned by the State Highway Agency.