US Bridges

Cth P over Thompson Lake Outlet

Good

Pepin County, Wisconsin · 0.8M E JCT Cth O · Structure no. B46000700000000

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
897
2022 count
Owner
County
County Highway Agency

About this bridge

Cth P over Thompson Lake Outlet is a concrete continuous culvert carrying Cth P over Thompson Lake Outlet in Pepin County, Wisconsin. It was built in 1979, so it is 46 years old, older 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 897 vehicles a day, projected to reach 986 by 2043. The structure is 22 ft (6.7 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCth P
CrossesThompson Lake Outlet
Location0.8M E JCT Cth O
RouteCounty Highway 0P
Coordinates44.62535, -91.99021
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 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 rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic897 (2022)
Projected traffic986 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 P over Thompson Lake Outlet built?

It was built in 1979, making it 46 years old in 2025.

What condition is Cth P over Thompson Lake Outlet 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 April 2024.

How much traffic does Cth P over Thompson Lake Outlet carry?

About 897 vehicles per day (2022 count).

How long is Cth P over Thompson Lake Outlet?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 36 ft wide.

Who owns Cth P over Thompson Lake Outlet?

It is owned by the County Highway Agency.