US Bridges

Cth O over Big Eau Pline Reservoir

Fair

Marathon County, Wisconsin · 1.3M N JCT Cth C · Structure no. B37029800000000

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
272 ft
3 main spans
Daily traffic
949
2023 count
Owner
County
County Highway Agency

About this bridge

Cth O over Big Eau Pline Reservoir is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth O over Big Eau Pline Reservoir in Marathon 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 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 949 vehicles a day, projected to reach 1,037 by 2042. The structure is 272 ft (82.8 m) long and 31 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesCth O
CrossesBig Eau Pline Reservoir
Location1.3M N JCT Cth C
RouteCounty Highway 0O
CountyMarathon County
StateWisconsin
Coordinates44.73069, -89.78878
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 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 rating90.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length272 ft (82.8 m)
Longest span90 ft (27.5 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic949 (2023)
Projected traffic1,037 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 O over Big Eau Pline Reservoir built?

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

What condition is Cth O over Big Eau Pline Reservoir 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 July 2023.

How much traffic does Cth O over Big Eau Pline Reservoir carry?

About 949 vehicles per day (2023 count).

How long is Cth O over Big Eau Pline Reservoir?

The structure is 272 ft (82.8 m) long with a longest span of 90 ft (27.5 m) and a deck 31 ft wide.

Who owns Cth O over Big Eau Pline Reservoir?

It is owned by the County Highway Agency.