US Bridges

Cth W over Namadji River

FairClosed to traffic

Douglas County, Wisconsin · 1.5M S JCT Cth C · Structure no. B16007000000000

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
150 ft
4 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

Cth W over Namadji River is a concrete continuous slab carrying Cth W over Namadji River in Douglas County, Wisconsin. It was built in 1993, so it is 32 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. Its operating status is: closed to all traffic.

It carries about 150 vehicles a day, projected to reach 165 by 2043. The structure is 150 ft (45.7 m) long and 28 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesCth W
CrossesNamadji River
Location1.5M S JCT Cth C
RouteCounty Highway 0W
CountyDouglas County
StateWisconsin
Coordinates46.55047, -92.2465
Functional classRural Minor 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic165 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Namadji River built?

It was built in 1993, making it 32 years old in 2025.

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

About 150 vehicles per day (2022 count).

How long is Cth W over Namadji River?

The structure is 150 ft (45.7 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns Cth W over Namadji River?

It is owned by the County Highway Agency.