US Bridges

Cth J over Big Sandy Creek

Fair

Marathon County, Wisconsin · 1.3M N JCT Cth N · Structure no. B37017500000000

Built
1979
46 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
102 ft
3 main spans
Daily traffic
1,457
2024 count
Owner
County
County Highway Agency

About this bridge

Cth J over Big Sandy Creek is a concrete slab carrying Cth J over Big Sandy Creek in Marathon County, Wisconsin. It was built in 1979, so it is 46 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 1,457 vehicles a day, projected to reach 1,578 by 2043. The structure is 102 ft (31 m) long and 36 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCth J
CrossesBig Sandy Creek
Location1.3M N JCT Cth N
RouteCounty Highway 0J
CountyMarathon County
StateWisconsin
Coordinates44.96454, -89.49179
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 2024
Inspection intervalevery 12 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 alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31 m)
Longest span38 ft (11.7 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,457 (2024)
Projected traffic1,578 by 2043
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

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 Big Sandy Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Cth J over Big Sandy 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 September 2024.

How much traffic does Cth J over Big Sandy Creek carry?

About 1,457 vehicles per day (2024 count).

How long is Cth J over Big Sandy Creek?

The structure is 102 ft (31 m) long with a longest span of 38 ft (11.7 m) and a deck 36 ft wide.

Who owns Cth J over Big Sandy Creek?

It is owned by the County Highway Agency.