206th Avenue over Cottonwood Ck
PoorPosted for loadJackson County, South Dakota · 4W & 1.2N Cottonwood · Structure no. 000000036080008
- Built
- 1940
- 85 years old, rebuilt 2013
- Condition
- Poor
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 10
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
206th Avenue over Cottonwood Ck is a prestressed concrete tee beam carrying 206th Avenue over Cottonwood Ck in Jackson County, South Dakota. It was built in 1940 and reconstructed in 2013, so it is 85 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 2 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2032. The structure is 60 ft (18.3 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
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.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 206th Avenue over Cottonwood Ck built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2013.
What condition is 206th Avenue over Cottonwood Ck 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 2023.
How much traffic does 206th Avenue over Cottonwood Ck carry?
About 10 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 206th Avenue over Cottonwood Ck?
The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 15 ft wide.
Who owns 206th Avenue over Cottonwood Ck?
It is owned by the County Highway Agency.