US Bridges

I090 W over Elk Ck

Good

Meade County, South Dakota · 1.8 NW N Piedmont Interch · Structure no. 000000047080534

Built
2017
8 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
159 ft
4 main spans
Daily traffic
12,320
2024 count
Owner
State
State Highway Agency

About this bridge

I090 W over Elk Ck is a concrete continuous slab carrying I090 W over Elk Ck in Meade County, South Dakota. It was built in 2017, so it is 8 years old, younger than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,320 vehicles a day, roughly 15% of them trucks, projected to reach 18,566 by 2044. The structure is 159 ft (48.6 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI090 W
CrossesElk Ck
Location1.8 NW N Piedmont Interch
RouteInterstate 90
Coordinates44.26541, -103.41225
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating57.1 US tons
Inventory rating44.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length159 ft (48.6 m)
Longest span44 ft (13.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,320 (2024)
Projected traffic18,566 by 2044
Trucks15%
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 Elk Ck built?

It was built in 2017, making it 8 years old in 2025.

What condition is I090 W over Elk Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does I090 W over Elk Ck carry?

About 12,320 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is I090 W over Elk Ck?

The structure is 159 ft (48.6 m) long with a longest span of 44 ft (13.3 m) and a deck 43 ft wide.

Who owns I090 W over Elk Ck?

It is owned by the State Highway Agency.