US Bridges

Cth L over Big Rib River

Fair

Marathon County, Wisconsin · 1.5M N JCT Cth H · Structure no. B37042600000000

Built
2011
14 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
641
2023 count
Owner
County
County Highway Agency

About this bridge

Cth L over Big Rib River is a concrete continuous slab carrying Cth L over Big Rib River in Marathon County, Wisconsin. It was built in 2011, so it is 14 years old, younger 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 641 vehicles a day, roughly 4% of them trucks, projected to reach 698 by 2042. The structure is 120 ft (36.7 m) long and 32 ft wide. If it were closed, the detour would be 20.5 mi (33 km).

Location

Open in Google Maps
CarriesCth L
CrossesBig Rib River
Location1.5M N JCT Cth H
RouteCounty Highway 0L
CountyMarathon County
StateWisconsin
Coordinates45.09071, -89.99476
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length120 ft (36.7 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic641 (2023)
Projected traffic698 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed20.5 mi (33 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 L over Big Rib River built?

It was built in 2011, making it 14 years old in 2025.

What condition is Cth L over Big Rib 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 October 2023.

How much traffic does Cth L over Big Rib River carry?

About 641 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Cth L over Big Rib River?

The structure is 120 ft (36.7 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns Cth L over Big Rib River?

It is owned by the County Highway Agency.