US Bridges

I090 W over Cheyenne Rv

Fair

Pennington County, South Dakota · 0.3 E Wasta Interch · Structure no. 000000052803312

Built
1964
61 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
926 ft
7 main spans
Daily traffic
4,404
2024 count
Owner
State
State Highway Agency

About this bridge

I090 W over Cheyenne Rv is a steel continuous stringer/multi-beam or girder carrying I090 W over Cheyenne Rv in Pennington County, South Dakota. It was built in 1964, so it is 61 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 4,404 vehicles a day, roughly 25% of them trucks, projected to reach 6,179 by 2044. The structure is 926 ft (282.1 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI090 W
CrossesCheyenne Rv
Location0.3 E Wasta Interch
RouteInterstate 90
CountyPennington County
StateSouth Dakota
Coordinates44.06425, -102.44149
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 protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length926 ft (282.1 m)
Longest span140 ft (42.7 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,404 (2024)
Projected traffic6,179 by 2044
Trucks25%
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 W over Cheyenne Rv built?

It was built in 1964, making it 61 years old in 2025.

What condition is I090 W over Cheyenne Rv 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 2023.

How much traffic does I090 W over Cheyenne Rv carry?

About 4,404 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is I090 W over Cheyenne Rv?

The structure is 926 ft (282.1 m) long with a longest span of 140 ft (42.7 m) and a deck 34 ft wide.

Who owns I090 W over Cheyenne Rv?

It is owned by the State Highway Agency.