US Bridges

IH USH51-IH39(SB) over Fourmile Creek

Fair

Portage County, Wisconsin · 5.3M S JCT Sth 54 to E · Structure no. B49004600000000

Built
1979
46 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
14,600
2022 count
Owner
State
State Highway Agency

About this bridge

IH USH51-IH39(SB) over Fourmile Creek is a concrete slab carrying IH USH51-IH39(SB) over Fourmile Creek in Portage County, Wisconsin. It was built in 1979, so it is 46 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 14,600 vehicles a day, roughly 14% of them trucks, projected to reach 17,500 by 2042. The structure is 32 ft (9.8 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIH USH51-IH39(SB)
CrossesFourmile Creek
Location5.3M S JCT Sth 54 to E
RouteInterstate 39
CountyPortage County
StateWisconsin
Coordinates44.35979, -89.521
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2022)
Projected traffic17,500 by 2042
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH USH51-IH39(SB) over Fourmile Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is IH USH51-IH39(SB) over Fourmile 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 July 2024.

How much traffic does IH USH51-IH39(SB) over Fourmile Creek carry?

About 14,600 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is IH USH51-IH39(SB) over Fourmile Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 42 ft wide.

Who owns IH USH51-IH39(SB) over Fourmile Creek?

It is owned by the State Highway Agency.