US Bridges

I090 E over 305 Ave

Good

Lyman County, South Dakota · W Presho Interchange · Structure no. 000000043150206

Built
1970
55 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
139 ft
3 main spans
Daily traffic
3,808
2024 count
Owner
State
State Highway Agency

About this bridge

I090 E over 305 Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying I090 E over 305 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,808 vehicles a day, roughly 27% of them trucks, projected to reach 5,438 by 2044. The structure is 139 ft (42.5 m) long and 41 ft wide.

CarriesI090 E
Crosses305 Ave
LocationW Presho Interchange
RouteInterstate 90
Coordinates43.89856, -100.06567
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length139 ft (42.5 m)
Longest span56 ft (17.1 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,808 (2024)
Projected traffic5,438 by 2044
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 E over 305 Ave built?

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

What condition is I090 E over 305 Ave 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 January 2023.

How much traffic does I090 E over 305 Ave carry?

About 3,808 vehicles per day (2024 count), of which roughly 27% are trucks.

How long is I090 E over 305 Ave?

The structure is 139 ft (42.5 m) long with a longest span of 56 ft (17.1 m) and a deck 41 ft wide.

Who owns I090 E over 305 Ave?

It is owned by the State Highway Agency.