US Bridges

Sth 46 over Apple River

Fair

Polk County, Wisconsin · 2.2M N JCT Cth Cc · Structure no. B48004600000000

Built
2003
22 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
118 ft
2 main spans
Daily traffic
6,000
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 46 over Apple River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 46 over Apple River in Polk County, Wisconsin. It was built in 2003, so it is 22 years old, younger 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 5 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 6,000 vehicles a day, roughly 10% of them trucks, projected to reach 6,360 by 2043. The structure is 118 ft (35.9 m) long and 47 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

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CarriesSth 46
CrossesApple River
Location2.2M N JCT Cth Cc
RouteState Highway 46
CountyPolk County
StateWisconsin
Coordinates45.27224, -92.36837
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length118 ft (35.9 m)
Longest span57 ft (17.4 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2022)
Projected traffic6,360 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 46 over Apple River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Sth 46 over Apple River 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 September 2024.

How much traffic does Sth 46 over Apple River carry?

About 6,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sth 46 over Apple River?

The structure is 118 ft (35.9 m) long with a longest span of 57 ft (17.4 m) and a deck 47 ft wide.

Who owns Sth 46 over Apple River?

It is owned by the State Highway Agency.