US Bridges

I090 E over White Willow Ck

Fair

Jackson County, South Dakota · 1.3 W Kadoka Interch · Structure no. 000000036295111

Built
1967
58 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
3,552
2024 count
Owner
State
State Highway Agency

About this bridge

I090 E over White Willow Ck is a concrete continuous slab carrying I090 E over White Willow Ck in Jackson County, South Dakota. It was built in 1967, so it is 58 years old, older than the South Dakota average of 48.9 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 3,552 vehicles a day, roughly 26% of them trucks, projected to reach 4,994 by 2044. The structure is 134 ft (40.8 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI090 E
CrossesWhite Willow Ck
Location1.3 W Kadoka Interch
RouteInterstate 90
Coordinates43.83598, -101.55197
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length134 ft (40.8 m)
Longest span49 ft (14.9 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,552 (2024)
Projected traffic4,994 by 2044
Trucks26%
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 I090 E over White Willow Ck built?

It was built in 1967, making it 58 years old in 2025.

What condition is I090 E over White Willow Ck 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 May 2023.

How much traffic does I090 E over White Willow Ck carry?

About 3,552 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I090 E over White Willow Ck?

The structure is 134 ft (40.8 m) long with a longest span of 49 ft (14.9 m) and a deck 41 ft wide.

Who owns I090 E over White Willow Ck?

It is owned by the State Highway Agency.