US Bridges

I090 W over 303 Ave

Fair

Lyman County, South Dakota · 3 W US 183 S Interch · Structure no. 000000043130205

Built
1970
55 years old
Condition
Fair
inspected December 2022
Type
Slab
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
3,787
2024 count
Owner
State
State Highway Agency

About this bridge

I090 W over 303 Ave is a concrete continuous slab carrying I090 W over 303 Ave in Lyman County, South Dakota. It was built in 1970, so it is 55 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 3,787 vehicles a day, roughly 26% of them trucks, projected to reach 5,408 by 2044. The structure is 106 ft (32.3 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI090 W
Crosses303 Ave
Location3 W US 183 S Interch
RouteInterstate 90
CountyLyman County
StateSouth Dakota
Coordinates43.89856, -100.10581
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.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length106 ft (32.3 m)
Longest span38 ft (11.6 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,787 (2024)
Projected traffic5,408 by 2044
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I090 W over 303 Ave built?

It was built in 1970, making it 55 years old in 2025.

What condition is I090 W over 303 Ave 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 2022.

How much traffic does I090 W over 303 Ave carry?

About 3,787 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I090 W over 303 Ave?

The structure is 106 ft (32.3 m) long with a longest span of 38 ft (11.6 m) and a deck 41 ft wide.

Who owns I090 W over 303 Ave?

It is owned by the State Highway Agency.