US Bridges

IH Ush 51-IH 39 SB over Sth 153

Fair

Marathon County, Wisconsin · 8.8M S JCT Sth 29 to E · Structure no. B37014800000000

Built
1973
52 years old, rebuilt 2015
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
167 ft
2 main spans
Daily traffic
29,800
2022 count
Owner
State
State Highway Agency

About this bridge

IH Ush 51-IH 39 SB over Sth 153 is a prestressed concrete continuous stringer/multi-beam or girder carrying IH Ush 51-IH 39 SB over Sth 153 in Marathon County, Wisconsin. It was built in 1973 and reconstructed in 2015, so it is 52 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 29,800 vehicles a day, roughly 18% of them trucks, projected to reach 32,200 by 2043. The structure is 167 ft (51 m) long and 43 ft wide.

Location

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CarriesIH Ush 51-IH 39 SB
CrossesSth 153
Location8.8M S JCT Sth 29 to E
RouteInterstate 39
CountyMarathon County
StateWisconsin
Coordinates44.78641, -89.68074
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length167 ft (51 m)
Longest span84 ft (25.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,800 (2022)
Projected traffic32,200 by 2043
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH Ush 51-IH 39 SB over Sth 153 built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2015.

What condition is IH Ush 51-IH 39 SB over Sth 153 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 IH Ush 51-IH 39 SB over Sth 153 carry?

About 29,800 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is IH Ush 51-IH 39 SB over Sth 153?

The structure is 167 ft (51 m) long with a longest span of 84 ft (25.6 m) and a deck 43 ft wide.

Who owns IH Ush 51-IH 39 SB over Sth 153?

It is owned by the State Highway Agency.