US Bridges

I229 S over Big Sioux Rv

Fair

Minnehaha County, South Dakota · 0.2 NE 26 ST Interch · Structure no. 000000050217219

Built
1997
28 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
325 ft
3 main spans
Daily traffic
18,624
2024 count
Owner
State
State Highway Agency

About this bridge

I229 S over Big Sioux Rv is a steel continuous stringer/multi-beam or girder carrying I229 S over Big Sioux Rv in Minnehaha County, South Dakota. It was built in 1997, so it is 28 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 18,624 vehicles a day, roughly 8% of them trucks, projected to reach 29,351 by 2044. The structure is 325 ft (99.2 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI229 S
CrossesBig Sioux Rv
Location0.2 NE 26 ST Interch
RouteInterstate 229
CountyMinnehaha County
StateSouth Dakota
Coordinates43.53163, -96.69821
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length325 ft (99.2 m)
Longest span124 ft (37.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,624 (2024)
Projected traffic29,351 by 2044
Trucks8%
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 I229 S over Big Sioux Rv built?

It was built in 1997, making it 28 years old in 2025.

What condition is I229 S over Big Sioux Rv 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 February 2023.

How much traffic does I229 S over Big Sioux Rv carry?

About 18,624 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is I229 S over Big Sioux Rv?

The structure is 325 ft (99.2 m) long with a longest span of 124 ft (37.9 m) and a deck 43 ft wide.

Who owns I229 S over Big Sioux Rv?

It is owned by the State Highway Agency.