US Bridges

215th Street over Big Sioux Rv

PoorPosted for load

Brookings County, South Dakota · 3S & 2.7W Brookings · Structure no. 000000006142190

Built
1900
125 years old, rebuilt 1950
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
141 ft
1 main span
Daily traffic
63
2022 count
Owner
County
County Highway Agency

About this bridge

215th Street over Big Sioux Rv is a steel truss - thru carrying 215th Street over Big Sioux Rv in Brookings County, South Dakota. It was built in 1900 and reconstructed in 1950, so it is 125 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 63 vehicles a day, roughly 2% of them trucks, projected to reach 63 by 2032. The structure is 141 ft (43.1 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries215th Street
CrossesBig Sioux Rv
Location3S & 2.7W Brookings
RouteCounty Highway 0
Coordinates44.26841, -96.84332
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating7.7 US tons
Inventory rating4.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length141 ft (43.1 m)
Longest span74 ft (22.6 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deck11 ft (3.3 m)

Traffic and service

Average daily traffic63 (2022)
Projected traffic63 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 215th Street over Big Sioux Rv built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1950.

What condition is 215th Street over Big Sioux Rv in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does 215th Street over Big Sioux Rv carry?

About 63 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 215th Street over Big Sioux Rv?

The structure is 141 ft (43.1 m) long with a longest span of 74 ft (22.6 m) and a deck 16 ft wide.

Who owns 215th Street over Big Sioux Rv?

It is owned by the County Highway Agency.