US Bridges

Cth S 2nd ST over Ahnapee River

Good

Kewaunee County, Wisconsin · 0.2M E JCT Sth 42 · Structure no. B31010100000000

Built
2019
6 years old
Condition
Good
inspected June 2022
Type
Slab
Concrete
Length
122 ft
2 main spans
Daily traffic
3,700
2022 count
Owner
County
County Highway Agency

About this bridge

Cth S 2nd ST over Ahnapee River is a concrete slab carrying Cth S 2nd ST over Ahnapee River in Kewaunee County, Wisconsin. It was built in 2019, so it is 6 years old, younger 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 3,700 vehicles a day, roughly 5% of them trucks, projected to reach 4,440 by 2042. The structure is 122 ft (37.3 m) long and 48 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCth S 2nd ST
CrossesAhnapee River
Location0.2M E JCT Sth 42
RouteCounty Highway 0S
Coordinates44.61025, -87.43569
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length122 ft (37.3 m)
Longest span60 ft (18.3 m)
Deck width48 ft (14.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2022)
Projected traffic4,440 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth S 2nd ST over Ahnapee River built?

It was built in 2019, making it 6 years old in 2025.

What condition is Cth S 2nd ST over Ahnapee 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 June 2022.

How much traffic does Cth S 2nd ST over Ahnapee River carry?

About 3,700 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Cth S 2nd ST over Ahnapee River?

The structure is 122 ft (37.3 m) long with a longest span of 60 ft (18.3 m) and a deck 48 ft wide.

Who owns Cth S 2nd ST over Ahnapee River?

It is owned by the County Highway Agency.