US Bridges

207th Street over Big Sioux Rv

FairPosted for load

Brookings County, South Dakota · 4N & 0.8E Volga · Structure no. 000000006108110

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
167 ft
3 main spans
Daily traffic
92
2022 count
Owner
County
County Highway Agency

About this bridge

207th Street over Big Sioux Rv is a steel stringer/multi-beam or girder carrying 207th Street over Big Sioux Rv in Brookings County, South Dakota. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 92 vehicles a day, roughly 2% of them trucks, projected to reach 92 by 2032. The structure is 167 ft (51 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries207th Street
CrossesBig Sioux Rv
Location4N & 0.8E Volga
RouteCounty Highway 0
Coordinates44.38424, -96.91069
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 rating30.5 US tons
Inventory rating18.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length167 ft (51 m)
Longest span64 ft (19.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic92 (2022)
Projected traffic92 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$3.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 207th Street over Big Sioux Rv built?

It was built in 1955, making it 70 years old in 2025.

What condition is 207th 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 207th Street over Big Sioux Rv carry?

About 92 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 207th Street over Big Sioux Rv?

The structure is 167 ft (51 m) long with a longest span of 64 ft (19.6 m) and a deck 26 ft wide.

Who owns 207th Street over Big Sioux Rv?

It is owned by the County Highway Agency.