US Bridges

204th Street over Big Sioux Rv

Fair

Brookings County, South Dakota · 1S & 0.8W Bruce · Structure no. 000000006112080

Built
1963
62 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
230 ft
4 main spans
Daily traffic
735
2022 count
Owner
County
County Highway Agency

About this bridge

204th Street over Big Sioux Rv is a steel stringer/multi-beam or girder carrying 204th Street over Big Sioux Rv in Brookings County, South Dakota. It was built in 1963, so it is 62 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 5 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 735 vehicles a day, roughly 3% of them trucks, projected to reach 735 by 2032. The structure is 230 ft (70.2 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
Carries204th Street
CrossesBig Sioux Rv
Location1S & 0.8W Bruce
RouteCounty Highway 0
CountyBrookings County
StateSouth Dakota
Coordinates44.42778, -96.90383
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating31.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length230 ft (70.2 m)
Longest span64 ft (19.5 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic735 (2022)
Projected traffic735 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 204th Street over Big Sioux Rv built?

It was built in 1963, making it 62 years old in 2025.

What condition is 204th Street 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 September 2024.

How much traffic does 204th Street over Big Sioux Rv carry?

About 735 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 204th Street over Big Sioux Rv?

The structure is 230 ft (70.2 m) long with a longest span of 64 ft (19.5 m) and a deck 32 ft wide.

Who owns 204th Street over Big Sioux Rv?

It is owned by the County Highway Agency.