US Bridges

Cth K over Br Willow River

PoorPosted for load

St. Croix County, Wisconsin · 1.3M W JCT Cth T · Structure no. P55090600000000

Built
1935
90 years old, rebuilt 1979
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
1,300
2022 count
Owner
County
County Highway Agency

About this bridge

Cth K over Br Willow River is a steel stringer/multi-beam or girder carrying Cth K over Br Willow River in St. Croix County, Wisconsin. It was built in 1935 and reconstructed in 1979, so it is 90 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 1,300 vehicles a day, projected to reach 1,227 by 2043. The structure is 26 ft (7.9 m) long and 36 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesCth K
CrossesBr Willow River
Location1.3M W JCT Cth T
RouteCounty Highway 0K
Coordinates45.12246, -92.4632
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckNot applicable
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2022)
Projected traffic1,227 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$199,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth K over Br Willow River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1979.

What condition is Cth K over Br Willow River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Cth K over Br Willow River carry?

About 1,300 vehicles per day (2022 count).

How long is Cth K over Br Willow River?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns Cth K over Br Willow River?

It is owned by the County Highway Agency.