US Bridges

Cth C over Kewaunee River

Fair

Kewaunee County, Wisconsin · 1.2M W JCT Sth 29 · Structure no. B31001500000000

Built
1970
55 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
144 ft
2 main spans
Daily traffic
1,433
2022 count
Owner
County
County Highway Agency

About this bridge

Cth C over Kewaunee River is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth C over Kewaunee River in Kewaunee County, Wisconsin. It was built in 1970, so it is 55 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 1,433 vehicles a day, projected to reach 1,576 by 2043. The structure is 144 ft (43.9 m) long and 41 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCth C
CrossesKewaunee River
Location1.2M W JCT Sth 29
RouteCounty Highway 0C
CountyKewaunee County
StateWisconsin
Coordinates44.46161, -87.54453
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length144 ft (43.9 m)
Longest span71 ft (21.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,433 (2022)
Projected traffic1,576 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 C over Kewaunee River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Cth C over Kewaunee 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 June 2024.

How much traffic does Cth C over Kewaunee River carry?

About 1,433 vehicles per day (2022 count).

How long is Cth C over Kewaunee River?

The structure is 144 ft (43.9 m) long with a longest span of 71 ft (21.6 m) and a deck 41 ft wide.

Who owns Cth C over Kewaunee River?

It is owned by the County Highway Agency.