US Bridges

206th Street over North Deer Ck

Good

Brookings County, South Dakota · 6N & 0.1E Brookings · Structure no. 000000006171100

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
52 ft
5 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

206th Street over North Deer Ck is a concrete continuous culvert carrying 206th Street over North Deer Ck in Brookings County, South Dakota. It was built in 2002, so it is 23 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 30 vehicles a day, roughly 3% of them trucks, projected to reach 34 by 2032. The structure is 52 ft (16 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries206th Street
CrossesNorth Deer Ck
Location6N & 0.1E Brookings
RouteCounty Highway 0
Coordinates44.39842, -96.78642
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating69.6 US tons
Inventory rating50 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20 + Mod
Structure length52 ft (16 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic34 by 2032
Trucks3%
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$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 206th Street over North Deer Ck built?

It was built in 2002, making it 23 years old in 2025.

What condition is 206th Street over North Deer Ck 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 2024.

How much traffic does 206th Street over North Deer Ck carry?

About 30 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 206th Street over North Deer Ck?

The structure is 52 ft (16 m) long with a longest span of 10 ft (3 m).

Who owns 206th Street over North Deer Ck?

It is owned by the County Highway Agency.