US Bridges

Cth W over Trappe River

Fair

Marathon County, Wisconsin · 2.9M N JCT Cth Ww · Structure no. B37025300000000

Built
1992
33 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
159 ft
2 main spans
Daily traffic
1,906
2023 count
Owner
County
County Highway Agency

About this bridge

Cth W over Trappe River is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth W over Trappe River in Marathon County, Wisconsin. It was built in 1992, so it is 33 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 1,906 vehicles a day, projected to reach 2,029 by 2042. The structure is 159 ft (48.5 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCth W
CrossesTrappe River
Location2.9M N JCT Cth Ww
RouteCounty Highway 0W
CountyMarathon County
StateWisconsin
Coordinates45.08372, -89.62059
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span78 ft (23.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,906 (2023)
Projected traffic2,029 by 2042
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 W over Trappe River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Cth W over Trappe 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 W over Trappe River carry?

About 1,906 vehicles per day (2023 count).

How long is Cth W over Trappe River?

The structure is 159 ft (48.5 m) long with a longest span of 78 ft (23.7 m) and a deck 34 ft wide.

Who owns Cth W over Trappe River?

It is owned by the County Highway Agency.