US Bridges

Cth X over Johnson Creek

Fair

Marathon County, Wisconsin · 1.7M N JCT Cth C · Structure no. B37013900000000

Built
1969
56 years old, rebuilt 2021
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
873
2023 count
Owner
County
County Highway Agency

About this bridge

Cth X over Johnson Creek is a prestressed concrete stringer/multi-beam or girder carrying Cth X over Johnson Creek in Marathon County, Wisconsin. It was built in 1969 and reconstructed in 2021, so it is 56 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 873 vehicles a day, projected to reach 870 by 2039. The structure is 58 ft (17.8 m) long and 37 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCth X
CrossesJohnson Creek
Location1.7M N JCT Cth C
RouteCounty Highway 0X
CountyMarathon County
StateWisconsin
Coordinates44.73835, -89.60823
Functional classRural Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length58 ft (17.8 m)
Longest span56 ft (17.2 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic873 (2023)
Projected traffic870 by 2039
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 X over Johnson Creek built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2021.

What condition is Cth X over Johnson Creek 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 Cth X over Johnson Creek carry?

About 873 vehicles per day (2023 count).

How long is Cth X over Johnson Creek?

The structure is 58 ft (17.8 m) long with a longest span of 56 ft (17.2 m) and a deck 37 ft wide.

Who owns Cth X over Johnson Creek?

It is owned by the County Highway Agency.