US Bridges

Cth S over Bois Brule River

Fair

Douglas County, Wisconsin · 6.2M S JCT Cth B · Structure no. B16010800000000

Built
2002
23 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
51 ft
1 main span
Daily traffic
451
2022 count
Owner
County
County Highway Agency

About this bridge

Cth S over Bois Brule River is a concrete slab carrying Cth S over Bois Brule River in Douglas County, Wisconsin. It was built in 2002, so it is 23 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 451 vehicles a day, projected to reach 496 by 2043. The structure is 51 ft (15.5 m) long and 30 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

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CarriesCth S
CrossesBois Brule River
Location6.2M S JCT Cth B
RouteCounty Highway 0S
CountyDouglas County
StateWisconsin
Coordinates46.43408, -91.67506
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
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic451 (2022)
Projected traffic496 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 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 S over Bois Brule River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Cth S over Bois Brule 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 August 2024.

How much traffic does Cth S over Bois Brule River carry?

About 451 vehicles per day (2022 count).

How long is Cth S over Bois Brule River?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 30 ft wide.

Who owns Cth S over Bois Brule River?

It is owned by the County Highway Agency.