US Bridges

Ush Bus 51-CTH N-T over Wisconsin River 30

Good

Marathon County, Wisconsin · 0.2M W JCT Ush B51 · Structure no. B37097100000000

Built
1951
74 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
698 ft
8 main spans
Daily traffic
16,100
2022 count
Owner
State
State Highway Agency

About this bridge

Ush Bus 51-CTH N-T over Wisconsin River 30 is a steel continuous stringer/multi-beam or girder carrying Ush Bus 51-CTH N-T over Wisconsin River 30 in Marathon County, Wisconsin. It was built in 1951, so it is 74 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 16,100 vehicles a day, projected to reach 19,500 by 2042. The structure is 698 ft (212.9 m) long and 44 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesUsh Bus 51-CTH N-T
CrossesWisconsin River 30
Location0.2M W JCT Ush B51
RouteU.S. Route 51
CountyMarathon County
StateWisconsin
Coordinates44.94889, -89.62916
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: 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 rating68.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length698 ft (212.9 m)
Longest span92 ft (27.9 m)
Deck width44 ft (13.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,100 (2022)
Projected traffic19,500 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed7.5 mi (12 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 Bus 51-CTH N-T over Wisconsin River 30 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Ush Bus 51-CTH N-T over Wisconsin River 30 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 May 2023.

How much traffic does Ush Bus 51-CTH N-T over Wisconsin River 30 carry?

About 16,100 vehicles per day (2022 count).

How long is Ush Bus 51-CTH N-T over Wisconsin River 30?

The structure is 698 ft (212.9 m) long with a longest span of 92 ft (27.9 m) and a deck 44 ft wide.

Who owns Ush Bus 51-CTH N-T over Wisconsin River 30?

It is owned by the State Highway Agency.