US Bridges

Cth N over Des Plaines River

Good

Kenosha County, Wisconsin · 0.6M W JCT Cth D · Structure no. B30065000000000

Built
1955
70 years old, rebuilt 2015
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
92 ft
2 main spans
Daily traffic
2,400
2022 count
Owner
County
County Highway Agency

About this bridge

Cth N over Des Plaines River is a steel continuous stringer/multi-beam or girder carrying Cth N over Des Plaines River in Kenosha County, Wisconsin. It was built in 1955 and reconstructed in 2015, so it is 70 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,400 vehicles a day, roughly 5% of them trucks, projected to reach 1,460 by 2043. The structure is 92 ft (27.9 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCth N
CrossesDes Plaines River
Location0.6M W JCT Cth D
RouteCounty Highway 0N
Coordinates42.60456, -88.03201
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating67.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length92 ft (27.9 m)
Longest span45 ft (13.7 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic1,460 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 N over Des Plaines River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2015.

What condition is Cth N over Des Plaines River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Cth N over Des Plaines River carry?

About 2,400 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Cth N over Des Plaines River?

The structure is 92 ft (27.9 m) long with a longest span of 45 ft (13.7 m) and a deck 32 ft wide.

Who owns Cth N over Des Plaines River?

It is owned by the County Highway Agency.