US Bridges

Cth M over Br Black River

Fair

Taylor County, Wisconsin · 1.3M W JCT Cth E to North · Structure no. P60091400000000

Built
1940
85 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
748
2022 count
Owner
County
County Highway Agency

About this bridge

Cth M over Br Black River is a concrete continuous culvert carrying Cth M over Br Black River in Taylor County, Wisconsin. It was built in 1940, so it is 85 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 748 vehicles a day, projected to reach 822 by 2042. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCth M
CrossesBr Black River
Location1.3M W JCT Cth E to North
RouteCounty Highway 0M
CountyTaylor County
StateWisconsin
Coordinates45.20431, -90.49928
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length23 ft (7 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic748 (2022)
Projected traffic822 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 M over Br Black River built?

It was built in 1940, making it 85 years old in 2025.

What condition is Cth M over Br Black River 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 M over Br Black River carry?

About 748 vehicles per day (2022 count).

How long is Cth M over Br Black River?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3.2 m).

Who owns Cth M over Br Black River?

It is owned by the County Highway Agency.