US Bridges

Cth K over Dorn Creek

Fair

Dane County, Wisconsin · 0.1M W JCT Cth Q · Structure no. P13092100000000

Built
1956
69 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
28 ft
2 main spans
Daily traffic
8,400
2022 count
Owner
County
County Highway Agency

About this bridge

Cth K over Dorn Creek is a steel culvert carrying Cth K over Dorn Creek in Dane County, Wisconsin. It was built in 1956, so it is 69 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 8,400 vehicles a day, projected to reach 10,080 by 2042. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCth K
CrossesDorn Creek
Location0.1M W JCT Cth Q
RouteCounty Highway 0K
CountyDane County
StateWisconsin
Coordinates43.14819, -89.473
Functional classRural Major Collector

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 15
Structure length28 ft (8.5 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,400 (2022)
Projected traffic10,080 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Cth K over Dorn Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Cth K over Dorn 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 October 2024.

How much traffic does Cth K over Dorn Creek carry?

About 8,400 vehicles per day (2022 count).

How long is Cth K over Dorn Creek?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.5 m).

Who owns Cth K over Dorn Creek?

It is owned by the County Highway Agency.