US Bridges

Cth Y over Tomahawk River

Fair

Oneida County, Wisconsin · 8.5M S JCT Ush 51 · Structure no. B43002900000000

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
36
2024 count
Owner
County
County Highway Agency

About this bridge

Cth Y over Tomahawk River is a prestressed concrete stringer/multi-beam or girder carrying Cth Y over Tomahawk River in Oneida County, Wisconsin. It was built in 1984, so it is 41 years old, older 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 36 vehicles a day, projected to reach 389 by 2043. The structure is 107 ft (32.6 m) long and 32 ft wide. If it were closed, the detour would be 41.6 mi (67 km).

Location

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CarriesCth Y
CrossesTomahawk River
Location8.5M S JCT Ush 51
RouteCounty Highway 0Y
CountyOneida County
StateWisconsin
Coordinates45.69278, -89.81194
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span105 ft (32 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2024)
Projected traffic389 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed41.6 mi (67 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 Tomahawk River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Cth Y over Tomahawk 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 July 2024.

How much traffic does Cth Y over Tomahawk River carry?

About 36 vehicles per day (2024 count).

How long is Cth Y over Tomahawk River?

The structure is 107 ft (32.6 m) long with a longest span of 105 ft (32 m) and a deck 32 ft wide.

Who owns Cth Y over Tomahawk River?

It is owned by the County Highway Agency.