US Bridges

Cth H over Treat Slough

Fair

Juneau County, Wisconsin · 4.2M N JCT Sth 21 · Structure no. B29010900000000

Built
1998
27 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
119
2022 count
Owner
County
County Highway Agency

About this bridge

Cth H over Treat Slough is a concrete slab carrying Cth H over Treat Slough in Juneau County, Wisconsin. It was built in 1998, so it is 27 years old, younger 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 119 vehicles a day, projected to reach 130 by 2043. The structure is 43 ft (13 m) long and 32 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCth H
CrossesTreat Slough
Location4.2M N JCT Sth 21
RouteCounty Highway 0H
CountyJuneau County
StateWisconsin
Coordinates44.07305, -90.28202
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.6 US tons
Inventory rating39.2 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 width32 ft (9.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic119 (2022)
Projected traffic130 by 2043
Trucks0%
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 H over Treat Slough built?

It was built in 1998, making it 27 years old in 2025.

What condition is Cth H over Treat Slough 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 June 2024.

How much traffic does Cth H over Treat Slough carry?

About 119 vehicles per day (2022 count).

How long is Cth H over Treat Slough?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Cth H over Treat Slough?

It is owned by the County Highway Agency.