US Bridges

Cth K over Ush 51 N

Good

Lincoln County, Wisconsin · 1.5M N JCT Sth 17 to N · Structure no. B35003400000000

Built
1975
50 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
270 ft
2 main spans
Daily traffic
2,400
2022 count
Owner
State
State Highway Agency

About this bridge

Cth K over Ush 51 N is a steel continuous stringer/multi-beam or girder carrying Cth K over Ush 51 N in Lincoln County, Wisconsin. It was built in 1975, so it is 50 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 8% of them trucks, projected to reach 8,704 by 2042. The structure is 270 ft (82.4 m) long and 44 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesCth K
CrossesUsh 51 N
Location1.5M N JCT Sth 17 to N
RouteCounty Highway 0K
Coordinates45.21076, -89.66806
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating41.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length270 ft (82.4 m)
Longest span133 ft (40.5 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic8,704 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cth K over Ush 51 N built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cth K over Ush 51 N 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 2023.

How much traffic does Cth K over Ush 51 N carry?

About 2,400 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Cth K over Ush 51 N?

The structure is 270 ft (82.4 m) long with a longest span of 133 ft (40.5 m) and a deck 44 ft wide.

Who owns Cth K over Ush 51 N?

It is owned by the State Highway Agency.