US Bridges

Cth H over Black Creek

Fair

Eau Claire County, Wisconsin · 1.7MI S of Cth M · Structure no. B18014400000000

Built
1994
31 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
470
2024 count
Owner
County
County Highway Agency

About this bridge

Cth H over Black Creek is a concrete slab carrying Cth H over Black Creek in Eau Claire County, Wisconsin. It was built in 1994, so it is 31 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 470 vehicles a day, roughly 10% of them trucks, projected to reach 507 by 2043. The structure is 43 ft (13 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCth H
CrossesBlack Creek
Location1.7MI S of Cth M
RouteCounty Highway 0H
Coordinates44.64431, -90.96269
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating70.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2024)
Projected traffic507 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 H over Black Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Cth H over Black 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 H over Black Creek carry?

About 470 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Cth H over Black Creek?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Cth H over Black Creek?

It is owned by the County Highway Agency.