Oak Street over Willow Ck
PoorCodington County, South Dakota · 5.2E 3.5N Watertown · Structure no. 000000015242145
- Built
- 1988
- 37 years old
- Condition
- Poor
- inspected June 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 60
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Oak Street over Willow Ck is a prestressed concrete tee beam carrying Oak Street over Willow Ck in Codington County, South Dakota. It was built in 1988, so it is 37 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 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.
It carries about 60 vehicles a day, roughly 67% of them trucks, projected to reach 70 by 2032. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Oak Street over Willow Ck built?
It was built in 1988, making it 37 years old in 2025.
What condition is Oak Street over Willow 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 June 2024.
How much traffic does Oak Street over Willow Ck carry?
About 60 vehicles per day (2022 count), of which roughly 67% are trucks.
How long is Oak Street over Willow Ck?
The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 31 ft wide.
Who owns Oak Street over Willow Ck?
It is owned by the County Highway Agency.