US Bridges

Cth J over Eau Claire River

FairPosted for load

Marathon County, Wisconsin · 0.3M N JCT Sth 29 · Structure no. B37002300000000

Built
1955
70 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
185 ft
3 main spans
Daily traffic
1,441
2023 count
Owner
County
County Highway Agency

About this bridge

Cth J over Eau Claire River is a steel continuous stringer/multi-beam or girder carrying Cth J over Eau Claire River in Marathon County, Wisconsin. It was built in 1955, so it is 70 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. Its operating status is: posted for other load-capacity restriction.

It carries about 1,441 vehicles a day, projected to reach 1,578 by 2042. The structure is 185 ft (56.5 m) long and 27 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

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CarriesCth J
CrossesEau Claire River
Location0.3M N JCT Sth 29
RouteCounty Highway 0J
CountyMarathon County
StateWisconsin
Coordinates44.90161, -89.50587
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating32.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length185 ft (56.5 m)
Longest span70 ft (21.3 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,441 (2023)
Projected traffic1,578 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 J over Eau Claire River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Cth J over Eau Claire 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 September 2023.

How much traffic does Cth J over Eau Claire River carry?

About 1,441 vehicles per day (2023 count).

How long is Cth J over Eau Claire River?

The structure is 185 ft (56.5 m) long with a longest span of 70 ft (21.3 m) and a deck 27 ft wide.

Who owns Cth J over Eau Claire River?

It is owned by the County Highway Agency.