US Bridges

Cth K over Oconto River

Fair

Oconto County, Wisconsin · 1.0M S JCT Sth 22 · Structure no. P42008000000000

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
363
2022 count
Owner
County
County Highway Agency

About this bridge

Cth K over Oconto River is a prestressed concrete stringer/multi-beam or girder carrying Cth K over Oconto River in Oconto County, Wisconsin. It was built in 1975, so it is 50 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 363 vehicles a day, projected to reach 399 by 2043. The structure is 107 ft (32.6 m) long and 34 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCth K
CrossesOconto River
Location1.0M S JCT Sth 22
RouteCounty Highway 0K
CountyOconto County
StateWisconsin
Coordinates44.88111, -88.20735
Functional classRural Local

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 inspectionSeptember 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 rating75.6 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length107 ft (32.6 m)
Longest span105 ft (32 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic363 (2022)
Projected traffic399 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 K over Oconto River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cth K over Oconto 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 September 2024.

How much traffic does Cth K over Oconto River carry?

About 363 vehicles per day (2022 count).

How long is Cth K over Oconto River?

The structure is 107 ft (32.6 m) long with a longest span of 105 ft (32 m) and a deck 34 ft wide.

Who owns Cth K over Oconto River?

It is owned by the County Highway Agency.