US Bridges

Ush 51 NB over County Line Creek

Fair

Marathon County, Wisconsin · 5.6M N JCT Cth Ww to E · Structure no. B37016300000000

Built
1974
51 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
10,300
2021 count
Owner
State
State Highway Agency

About this bridge

Ush 51 NB over County Line Creek is a concrete continuous culvert carrying Ush 51 NB over County Line Creek in Marathon County, Wisconsin. It was built in 1974, so it is 51 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 10,300 vehicles a day, roughly 10% of them trucks, projected to reach 19,100 by 2043. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesUsh 51 NB
CrossesCounty Line Creek
Location5.6M N JCT Cth Ww to E
RouteU.S. Route 51
CountyMarathon County
StateWisconsin
Coordinates45.1002, -89.63591
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: 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 rating37.8 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,300 (2021)
Projected traffic19,100 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ush 51 NB over County Line Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Ush 51 NB over County Line Creek 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 November 2024.

How much traffic does Ush 51 NB over County Line Creek carry?

About 10,300 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Ush 51 NB over County Line Creek?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.3 m).

Who owns Ush 51 NB over County Line Creek?

It is owned by the State Highway Agency.