US Bridges

Cth X over Black River

Poor

Clark County, Wisconsin · 0.9M E JCT Cth O to S · Structure no. B10011100000000

Built
1993
32 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
194 ft
2 main spans
Daily traffic
1,500
2022 count
Owner
County
County Highway Agency

About this bridge

Cth X over Black River is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth X over Black River in Clark County, Wisconsin. It was built in 1993, so it is 32 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 1,028 by 2043. The structure is 194 ft (59 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCth X
CrossesBlack River
Location0.9M E JCT Cth O to S
RouteCounty Highway 0X
Coordinates44.95166, -90.64026
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating71.7 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length194 ft (59 m)
Longest span95 ft (29 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2022)
Projected traffic1,028 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth X over Black River built?

It was built in 1993, making it 32 years old in 2025.

What condition is Cth X over Black River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Cth X over Black River carry?

About 1,500 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Cth X over Black River?

The structure is 194 ft (59 m) long with a longest span of 95 ft (29 m) and a deck 32 ft wide.

Who owns Cth X over Black River?

It is owned by the County Highway Agency.