US Bridges

Cth F over Clam River

Poor

Burnett County, Wisconsin · 5.2M W JCT Cth Ff · Structure no. P07001500000000

Built
1972
53 years old
Condition
Poor
inspected October 2024
Type
Slab
Wood or Timber
Length
133 ft
5 main spans
Daily traffic
235
2024 count
Owner
County
County Highway Agency

About this bridge

Cth F over Clam River is a wood or timber slab carrying Cth F over Clam River in Burnett County, Wisconsin. It was built in 1972, so it is 53 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 235 vehicles a day, projected to reach 250 by 2043. The structure is 133 ft (40.5 m) long and 36 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCth F
CrossesClam River
Location5.2M W JCT Cth Ff
RouteCounty Highway 0F
CountyBurnett County
StateWisconsin
Coordinates45.93738, -92.52626
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating61.2 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 15
Structure length133 ft (40.5 m)
Longest span26 ft (7.9 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235 (2024)
Projected traffic250 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$639,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth F over Clam River built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cth F over Clam River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Cth F over Clam River carry?

About 235 vehicles per day (2024 count).

How long is Cth F over Clam River?

The structure is 133 ft (40.5 m) long with a longest span of 26 ft (7.9 m) and a deck 36 ft wide.

Who owns Cth F over Clam River?

It is owned by the County Highway Agency.