US Bridges

Sth 34 over Wisconsin River 24

Fair

Marathon County, Wisconsin · 1.8M N JCT Cth C to W · Structure no. B37018700000000

Built
1980
45 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
554 ft
4 main spans
Daily traffic
5,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sth 34 over Wisconsin River 24 is a steel continuous stringer/multi-beam or girder carrying Sth 34 over Wisconsin River 24 in Marathon County, Wisconsin. It was built in 1980, so it is 45 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 6 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 5,900 vehicles a day, projected to reach 8,240 by 2042. The structure is 554 ft (168.9 m) long and 43 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSth 34
CrossesWisconsin River 24
Location1.8M N JCT Cth C to W
RouteState Highway 34
CountyMarathon County
StateWisconsin
Coordinates44.71107, -89.69864
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating64.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length554 ft (168.9 m)
Longest span153 ft (46.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic8,240 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

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 Sth 34 over Wisconsin River 24 built?

It was built in 1980, making it 45 years old in 2025.

What condition is Sth 34 over Wisconsin River 24 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 2023.

How much traffic does Sth 34 over Wisconsin River 24 carry?

About 5,900 vehicles per day (2023 count).

How long is Sth 34 over Wisconsin River 24?

The structure is 554 ft (168.9 m) long with a longest span of 153 ft (46.6 m) and a deck 43 ft wide.

Who owns Sth 34 over Wisconsin River 24?

It is owned by the State Highway Agency.