US Bridges

Sth 29 WB over Ush 51 Bus

Good

Marathon County, Wisconsin · 2.4M W JCT Cth X · Structure no. B37006300000000

Built
1971
54 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
355 ft
4 main spans
Daily traffic
21,100
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 29 WB over Ush 51 Bus is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 29 WB over Ush 51 Bus in Marathon County, Wisconsin. It was built in 1971, so it is 54 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 21,100 vehicles a day, roughly 2% of them trucks, projected to reach 46,300 by 2043. The structure is 355 ft (108.1 m) long and 67 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSth 29 WB
CrossesUsh 51 Bus
Location2.4M W JCT Cth X
RouteState Highway 29
Coordinates44.89622, -89.61442
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating28.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length355 ft (108.1 m)
Longest span108 ft (32.9 m)
Deck width67 ft (20.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,100 (2021)
Projected traffic46,300 by 2043
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 29 WB over Ush 51 Bus built?

It was built in 1971, making it 54 years old in 2025.

What condition is Sth 29 WB over Ush 51 Bus 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 2024.

How much traffic does Sth 29 WB over Ush 51 Bus carry?

About 21,100 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Sth 29 WB over Ush 51 Bus?

The structure is 355 ft (108.1 m) long with a longest span of 108 ft (32.9 m) and a deck 67 ft wide.

Who owns Sth 29 WB over Ush 51 Bus?

It is owned by the State Highway Agency.