US Bridges

Cth B over East Twin River

Fair

Kewaunee County, Wisconsin · 0.7M S JCT Cth J · Structure no. B31004200000000

Built
1987
38 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
70 ft
2 main spans
Daily traffic
279
2022 count
Owner
County
County Highway Agency

About this bridge

Cth B over East Twin River is a concrete continuous slab carrying Cth B over East Twin River in Kewaunee County, Wisconsin. It was built in 1987, so it is 38 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 5 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 279 vehicles a day, projected to reach 306 by 2043. The structure is 70 ft (21.3 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCth B
CrossesEast Twin River
Location0.7M S JCT Cth J
RouteCounty Highway 0B
CountyKewaunee County
StateWisconsin
Coordinates44.39061, -87.60064
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 rating71.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span34 ft (10.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic279 (2022)
Projected traffic306 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 B over East Twin River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Cth B over East Twin 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 B over East Twin River carry?

About 279 vehicles per day (2022 count).

How long is Cth B over East Twin River?

The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.4 m) and a deck 30 ft wide.

Who owns Cth B over East Twin River?

It is owned by the County Highway Agency.