US Bridges

Cth T over Upper Tamarack River

Poor

Douglas County, Wisconsin · 2.3M W JCT Sth 35 · Structure no. B16009400000000

Built
1999
26 years old
Condition
Poor
inspected August 2024
Type
Slab
Concrete Continuous
Length
85 ft
2 main spans
Daily traffic
175
2023 count
Owner
County
County Highway Agency

About this bridge

Cth T over Upper Tamarack River is a concrete continuous slab carrying Cth T over Upper Tamarack River in Douglas County, Wisconsin. It was built in 1999, so it is 26 years old, younger 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 175 vehicles a day, projected to reach 165 by 2043. The structure is 85 ft (25.8 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCth T
CrossesUpper Tamarack River
Location2.3M W JCT Sth 35
RouteCounty Highway 0T
CountyDouglas County
StateWisconsin
Coordinates46.16458, -92.2845
Functional classRural Minor 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length85 ft (25.8 m)
Longest span41 ft (12.5 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2023)
Projected traffic165 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$431,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth T over Upper Tamarack River built?

It was built in 1999, making it 26 years old in 2025.

What condition is Cth T over Upper Tamarack 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 August 2024.

How much traffic does Cth T over Upper Tamarack River carry?

About 175 vehicles per day (2023 count).

How long is Cth T over Upper Tamarack River?

The structure is 85 ft (25.8 m) long with a longest span of 41 ft (12.5 m) and a deck 31 ft wide.

Who owns Cth T over Upper Tamarack River?

It is owned by the County Highway Agency.