US Bridges

Cth N over Hay River

Fair

Dunn County, Wisconsin · 0.3M E JCT Cth F · Structure no. B17008200000000

Built
1987
38 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
102 ft
2 main spans
Daily traffic
130
2024 count
Owner
County
County Highway Agency

About this bridge

Cth N over Hay River is a concrete continuous slab carrying Cth N over Hay River in Dunn County, Wisconsin. It was built in 1987, so it is 38 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 130 vehicles a day, projected to reach 138 by 2043. The structure is 102 ft (31 m) long and 26 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCth N
CrossesHay River
Location0.3M E JCT Cth F
RouteCounty Highway 0N
CountyDunn County
StateWisconsin
Coordinates45.06852, -91.94415
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
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 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 rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length102 ft (31 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2024)
Projected traffic138 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 Hay River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Cth N over Hay 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 2024.

How much traffic does Cth N over Hay River carry?

About 130 vehicles per day (2024 count).

How long is Cth N over Hay River?

The structure is 102 ft (31 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns Cth N over Hay River?

It is owned by the County Highway Agency.