170 Street over Willow Ck
GoodCodington County, South Dakota · 4.9E 2N Watertown · Structure no. 000000015239160
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 49
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
170 Street over Willow Ck is a concrete continuous slab carrying 170 Street over Willow Ck in Codington County, South Dakota. It was built in 1995, so it is 30 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 49 vehicles a day, roughly 2% of them trucks, projected to reach 49 by 2032. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 170 Street over Willow Ck built?
It was built in 1995, making it 30 years old in 2025.
What condition is 170 Street over Willow 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 June 2023.
How much traffic does 170 Street over Willow Ck carry?
About 49 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 170 Street over Willow Ck?
The structure is 80 ft (24.4 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.
Who owns 170 Street over Willow Ck?
It is owned by the County Highway Agency.