US Bridges

206th ST over Turtle Ck

Fair

Hand County, South Dakota · 8S & 0.2E Miller · Structure no. 000000030162340

Built
1928
97 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

206th ST over Turtle Ck is a concrete continuous slab carrying 206th ST over Turtle Ck in Hand County, South Dakota. It was built in 1928, so it is 97 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 6 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2032. The structure is 35 ft (10.7 m) long and 21 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries206th ST
CrossesTurtle Ck
Location8S & 0.2E Miller
RouteCounty Highway 0
Coordinates44.39961, -98.97863
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span10 ft (3 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 206th ST over Turtle Ck built?

It was built in 1928, making it 97 years old in 2025.

What condition is 206th ST over Turtle Ck 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 August 2024.

How much traffic does 206th ST over Turtle Ck carry?

About 10 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 206th ST over Turtle Ck?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m) and a deck 21 ft wide.

Who owns 206th ST over Turtle Ck?

It is owned by the County Highway Agency.