US Bridges

Cth a over Amnicon River

Good

Douglas County, Wisconsin · 5.7M S JCT Cth B · Structure no. B16010900000000

Built
2003
22 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
196
2022 count
Owner
County
County Highway Agency

About this bridge

Cth a over Amnicon River is a concrete slab carrying Cth a over Amnicon River in Douglas County, Wisconsin. It was built in 2003, so it is 22 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 196 vehicles a day, projected to reach 215 by 2043. The structure is 43 ft (13 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCth a
CrossesAmnicon River
Location5.7M S JCT Cth B
RouteCounty Highway 0A
Coordinates46.45286, -92.07117
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2022)
Projected traffic215 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 a over Amnicon River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Cth a over Amnicon River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Cth a over Amnicon River carry?

About 196 vehicles per day (2022 count).

How long is Cth a over Amnicon River?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Cth a over Amnicon River?

It is owned by the County Highway Agency.