US Bridges

IH USH51 - IH39 NB over Duck Creek

FairPosted for load

Portage County, Wisconsin · 2.0M N JCT Cth W · Structure no. B49000700000000

Built
1962
63 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
14,600
2022 count
Owner
State
State Highway Agency

About this bridge

IH USH51 - IH39 NB over Duck Creek is a concrete slab carrying IH USH51 - IH39 NB over Duck Creek in Portage County, Wisconsin. It was built in 1962, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 14,600 vehicles a day, roughly 14% of them trucks, projected to reach 17,520 by 2042. The structure is 24 ft (7.3 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH USH51 - IH39 NB
CrossesDuck Creek
Location2.0M N JCT Cth W
RouteInterstate 39
CountyPortage County
StateWisconsin
Coordinates44.33797, -89.5224
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 statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2022)
Projected traffic17,520 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 NB over Duck Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is IH USH51 - IH39 NB over Duck 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 NB over Duck Creek carry?

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

How long is IH USH51 - IH39 NB over Duck Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 47 ft wide.

Who owns IH USH51 - IH39 NB over Duck Creek?

It is owned by the State Highway Agency.