US Bridges

I090 W over Bull Ck

Fair

Pennington County, South Dakota · 3.3 E Wasta Interch · Structure no. 000000052831309

Built
1964
61 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
189 ft
3 main spans
Daily traffic
4,065
2024 count
Owner
State
State Highway Agency

About this bridge

I090 W over Bull Ck is a prestressed concrete continuous stringer/multi-beam or girder carrying I090 W over Bull Ck 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 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 4,065 vehicles a day, roughly 24% of them trucks, projected to reach 5,703 by 2044. The structure is 189 ft (57.5 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
CrossesBull Ck
Location3.3 E Wasta Interch
RouteInterstate 90
CountyPennington County
StateSouth Dakota
Coordinates44.06738, -102.38416
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating71.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length189 ft (57.5 m)
Longest span63 ft (19.1 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,065 (2024)
Projected traffic5,703 by 2044
Trucks24%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$709,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I090 W over Bull Ck built?

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

What condition is I090 W over Bull 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 December 2023.

How much traffic does I090 W over Bull Ck carry?

About 4,065 vehicles per day (2024 count), of which roughly 24% are trucks.

How long is I090 W over Bull Ck?

The structure is 189 ft (57.5 m) long with a longest span of 63 ft (19.1 m) and a deck 34 ft wide.

Who owns I090 W over Bull Ck?

It is owned by the State Highway Agency.