US Bridges

Cth Y over Rush River

PoorPosted for load

St. Croix County, Wisconsin · 1.3M S JCT Cth N · Structure no. P55006700000000

Built
1964
61 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

Cth Y over Rush River is a steel stringer/multi-beam or girder carrying Cth Y over Rush River in St. Croix County, Wisconsin. It was built in 1964, so it is 61 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 load restriction.

It carries about 250 vehicles a day, projected to reach 191 by 2043. The structure is 63 ft (19.1 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCth Y
CrossesRush River
Location1.3M S JCT Cth N
RouteCounty Highway 0Y
CountySt. Croix County
StateWisconsin
Coordinates44.90224, -92.39499
Functional classRural Local

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load 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 rating25.2 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length63 ft (19.1 m)
Longest span61 ft (18.6 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic191 by 2043
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$294,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Y over Rush River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Cth Y over Rush 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 Y over Rush River carry?

About 250 vehicles per day (2023 count).

How long is Cth Y over Rush River?

The structure is 63 ft (19.1 m) long with a longest span of 61 ft (18.6 m) and a deck 28 ft wide.

Who owns Cth Y over Rush River?

It is owned by the County Highway Agency.