US Bridges

Lrd 40th ST over Willow River

FairPosted for load

Polk County, Wisconsin · 1.8M S JCT Cth a · Structure no. P48091100000000

Built
1948
77 years old
Condition
Fair
inspected April 2024
Type
Slab
Wood or Timber
Length
35 ft
2 main spans
Daily traffic
100
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd 40th ST over Willow River is a wood or timber slab carrying Lrd 40th ST over Willow River in Polk County, Wisconsin. It was built in 1948, so it is 77 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 5 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 100 vehicles a day, projected to reach 882 by 2043. The structure is 35 ft (10.8 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLrd 40th ST
CrossesWillow River
Location1.8M S JCT Cth a
RouteCity Street 0
CountyPolk County
StateWisconsin
Coordinates45.23453, -92.23925
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 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 geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length35 ft (10.8 m)
Longest span17 ft (5.2 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic882 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Lrd 40th ST over Willow River built?

It was built in 1948, making it 77 years old in 2025.

What condition is Lrd 40th ST over Willow 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 April 2024.

How much traffic does Lrd 40th ST over Willow River carry?

About 100 vehicles per day (2024 count).

How long is Lrd 40th ST over Willow River?

The structure is 35 ft (10.8 m) long with a longest span of 17 ft (5.2 m) and a deck 26 ft wide.

Who owns Lrd 40th ST over Willow River?

It is owned by the Town or Township Highway Agency.