US Bridges

I090 E over I229

Fair

Minnehaha County, South Dakota · I 90 & I 229 Interchange · Structure no. 000000050221167

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
182 ft
2 main spans
Daily traffic
18,161
2024 count
Owner
State
State Highway Agency

About this bridge

I090 E over I229 is a steel continuous stringer/multi-beam or girder carrying I090 E over I229 in Minnehaha County, South Dakota. It was built in 1999, so it is 26 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 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 18,161 vehicles a day, roughly 10% of them trucks, projected to reach 28,622 by 2044. The structure is 182 ft (55.5 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI090 E
CrossesI229
LocationI 90 & I 229 Interchange
RouteInterstate 90
CountyMinnehaha County
StateSouth Dakota
Coordinates43.6066, -96.69042
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating88.3 US tons
Inventory rating52.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length182 ft (55.5 m)
Longest span89 ft (27.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,161 (2024)
Projected traffic28,622 by 2044
Trucks10%
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 E over I229 built?

It was built in 1999, making it 26 years old in 2025.

What condition is I090 E over I229 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 October 2023.

How much traffic does I090 E over I229 carry?

About 18,161 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is I090 E over I229?

The structure is 182 ft (55.5 m) long with a longest span of 89 ft (27.1 m) and a deck 43 ft wide.

Who owns I090 E over I229?

It is owned by the State Highway Agency.