US Bridges

I090 E over Whitewater Ck

Fair

Jackson County, South Dakota · 6.3 NW Sd 240 S Interch · Structure no. 000000036071077

Built
1973
52 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
3 main spans
Daily traffic
3,956
2024 count
Owner
State
State Highway Agency

About this bridge

I090 E over Whitewater Ck is a steel continuous stringer/multi-beam or girder carrying I090 E over Whitewater Ck in Jackson County, South Dakota. It was built in 1973, so it is 52 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 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 3,956 vehicles a day, roughly 26% of them trucks, projected to reach 5,550 by 2044. The structure is 231 ft (70.3 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI090 E
CrossesWhitewater Ck
Location6.3 NW Sd 240 S Interch
RouteInterstate 90
CountyJackson County
StateSouth Dakota
Coordinates43.88423, -101.9972
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length231 ft (70.3 m)
Longest span89 ft (27.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,956 (2024)
Projected traffic5,550 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 Whitewater Ck built?

It was built in 1973, making it 52 years old in 2025.

What condition is I090 E over Whitewater 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 June 2024.

How much traffic does I090 E over Whitewater Ck carry?

About 3,956 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I090 E over Whitewater Ck?

The structure is 231 ft (70.3 m) long with a longest span of 89 ft (27.2 m) and a deck 43 ft wide.

Who owns I090 E over Whitewater Ck?

It is owned by the State Highway Agency.