US Bridges

Cth Q over Willow River

Fair

St. Croix County, Wisconsin · 0.6M E JCT Ush 63 · Structure no. B55094200000000

Built
1915
110 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
226
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Q over Willow River is a steel stringer/multi-beam or girder carrying Cth Q over Willow River in St. Croix County, Wisconsin. It was built in 1915, so it is 110 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 226 vehicles a day, projected to reach 196 by 2042. The structure is 47 ft (14.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth Q
CrossesWillow River
Location0.6M E JCT Ush 63
RouteCounty Highway 0Q
CountySt. Croix County
StateWisconsin
Coordinates45.19459, -92.27026
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length47 ft (14.4 m)
Longest span44 ft (13.5 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic226 (2022)
Projected traffic196 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Q over Willow River built?

It was built in 1915, making it 110 years old in 2025.

What condition is Cth Q over Willow River 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 2023.

How much traffic does Cth Q over Willow River carry?

About 226 vehicles per day (2022 count).

How long is Cth Q over Willow River?

The structure is 47 ft (14.4 m) long with a longest span of 44 ft (13.5 m) and a deck 33 ft wide.

Who owns Cth Q over Willow River?

It is owned by the County Highway Agency.