US Bridges

Sth 34 over IH Ush 51-IH 39

Fair

Marathon County, Wisconsin · 0.7M N JCT Cth Db · Structure no. B37014600000000

Built
1972
53 years old, rebuilt 2013
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
2 main spans
Daily traffic
6,800
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 34 over IH Ush 51-IH 39 is a steel continuous stringer/multi-beam or girder carrying Sth 34 over IH Ush 51-IH 39 in Marathon County, Wisconsin. It was built in 1972 and reconstructed in 2013, so it is 53 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 6,800 vehicles a day, projected to reach 9,100 by 2043. The structure is 266 ft (81 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesSth 34
CrossesIH Ush 51-IH 39
Location0.7M N JCT Cth Db
RouteState Highway 34
CountyMarathon County
StateWisconsin
Coordinates44.72882, -89.67899
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length266 ft (81 m)
Longest span135 ft (41.3 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2022)
Projected traffic9,100 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Sth 34 over IH Ush 51-IH 39 built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2013.

What condition is Sth 34 over IH Ush 51-IH 39 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 June 2024.

How much traffic does Sth 34 over IH Ush 51-IH 39 carry?

About 6,800 vehicles per day (2022 count).

How long is Sth 34 over IH Ush 51-IH 39?

The structure is 266 ft (81 m) long with a longest span of 135 ft (41.3 m) and a deck 48 ft wide.

Who owns Sth 34 over IH Ush 51-IH 39?

It is owned by the State Highway Agency.