US Bridges

209th Street over Tributary to Big Sioux R

Good

Brookings County, South Dakota · 2.0N & 0.5W Bushnell · Structure no. 000000006235130

Built
2006
19 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
38
2022 count
Owner
County
County Highway Agency

About this bridge

209th Street over Tributary to Big Sioux R is a prestressed concrete tee beam carrying 209th Street over Tributary to Big Sioux R in Brookings County, South Dakota. It was built in 2006, so it is 19 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 38 vehicles a day, roughly 2% of them trucks, projected to reach 38 by 2032. The structure is 65 ft (19.8 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries209th Street
CrossesTributary to Big Sioux R
Location2.0N & 0.5W Bushnell
RouteCounty Highway 0
Coordinates44.35467, -96.65716
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length65 ft (19.8 m)
Longest span63 ft (19.3 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2022)
Projected traffic38 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$1.2 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 209th Street over Tributary to Big Sioux R built?

It was built in 2006, making it 19 years old in 2025.

What condition is 209th Street over Tributary to Big Sioux R in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does 209th Street over Tributary to Big Sioux R carry?

About 38 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 209th Street over Tributary to Big Sioux R?

The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.3 m) and a deck 31 ft wide.

Who owns 209th Street over Tributary to Big Sioux R?

It is owned by the County Highway Agency.