US Bridges

Cth Y over Plum Creek

Good

Sauk County, Wisconsin · 2.0M W JCT Cth G · Structure no. B56012500000000

Built
1995
30 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
179
2024 count
Owner
County
County Highway Agency

About this bridge

Cth Y over Plum Creek is a concrete slab carrying Cth Y over Plum Creek in Sauk County, Wisconsin. It was built in 1995, so it is 30 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 179 vehicles a day, roughly 7% of them trucks, projected to reach 196 by 2043. The structure is 43 ft (13 m) long and 30 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesCth Y
CrossesPlum Creek
Location2.0M W JCT Cth G
RouteCounty Highway 0Y
Coordinates43.61828, -90.27161
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179 (2024)
Projected traffic196 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 Y over Plum Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Cth Y over Plum Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Cth Y over Plum Creek carry?

About 179 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Cth Y over Plum Creek?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Cth Y over Plum Creek?

It is owned by the County Highway Agency.