US Bridges

Ush 8 over Tomahawk River

Fair

Lincoln County, Wisconsin · 0.4M E JCT Cth Y · Structure no. B35006700000000

Built
1936
89 years old, rebuilt 1976
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
105 ft
1 main span
Daily traffic
3,100
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 8 over Tomahawk River is a steel truss - thru carrying Ush 8 over Tomahawk River in Lincoln County, Wisconsin. It was built in 1936 and reconstructed in 1976, so it is 89 years old, older 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 3,100 vehicles a day, roughly 10% of them trucks, projected to reach 5,420 by 2042. The structure is 105 ft (31.9 m) long and 31 ft wide. If it were closed, the detour would be 67.7 mi (109 km).

Location

Open in Google Maps
CarriesUsh 8
CrossesTomahawk River
Location0.4M E JCT Cth Y
RouteU.S. Route 8
CountyLincoln County
StateWisconsin
Coordinates45.53235, -89.74755
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length105 ft (31.9 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic3,100 (2022)
Projected traffic5,420 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed67.7 mi (109 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ush 8 over Tomahawk River built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1976.

What condition is Ush 8 over Tomahawk 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 June 2023.

How much traffic does Ush 8 over Tomahawk River carry?

About 3,100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ush 8 over Tomahawk River?

The structure is 105 ft (31.9 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns Ush 8 over Tomahawk River?

It is owned by the State Highway Agency.