US Bridges

Cth M over Sheboygan River

Fair

Sheboygan County, Wisconsin · 0.9M N JCT Cth O · Structure no. B59013200000000

Built
1989
36 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
144 ft
3 main spans
Daily traffic
292
2022 count
Owner
County
County Highway Agency

About this bridge

Cth M over Sheboygan River is a concrete continuous slab carrying Cth M over Sheboygan River in Sheboygan County, Wisconsin. It was built in 1989, so it is 36 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 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 292 vehicles a day, projected to reach 321 by 2042. The structure is 144 ft (43.9 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesCth M
CrossesSheboygan River
Location0.9M N JCT Cth O
RouteCounty Highway 0M
CountySheboygan County
StateWisconsin
Coordinates43.77996, -87.90113
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length144 ft (43.9 m)
Longest span58 ft (17.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic292 (2022)
Projected traffic321 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Sheboygan River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Cth M over Sheboygan 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 July 2023.

How much traffic does Cth M over Sheboygan River carry?

About 292 vehicles per day (2022 count).

How long is Cth M over Sheboygan River?

The structure is 144 ft (43.9 m) long with a longest span of 58 ft (17.7 m) and a deck 30 ft wide.

Who owns Cth M over Sheboygan River?

It is owned by the County Highway Agency.