US Bridges

Cth N over Pigeon River

Fair

Grant County, Wisconsin · 2.7M S JCT Sth 35 · Structure no. B22005100000000

Built
1962
63 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
73 ft
2 main spans
Daily traffic
477
2022 count
Owner
County
County Highway Agency

About this bridge

Cth N over Pigeon River is a concrete continuous slab carrying Cth N over Pigeon River in Grant County, Wisconsin. It was built in 1962, so it is 63 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 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 477 vehicles a day, projected to reach 524 by 2043. The structure is 73 ft (22.2 m) long and 30 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCth N
CrossesPigeon River
Location2.7M S JCT Sth 35
RouteCounty Highway 0N
CountyGrant County
StateWisconsin
Coordinates42.80833, -90.76242
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length73 ft (22.2 m)
Longest span35 ft (10.7 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic477 (2022)
Projected traffic524 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Pigeon River built?

It was built in 1962, making it 63 years old in 2025.

What condition is Cth N over Pigeon 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 September 2024.

How much traffic does Cth N over Pigeon River carry?

About 477 vehicles per day (2022 count).

How long is Cth N over Pigeon River?

The structure is 73 ft (22.2 m) long with a longest span of 35 ft (10.7 m) and a deck 30 ft wide.

Who owns Cth N over Pigeon River?

It is owned by the County Highway Agency.