270 ST over Twelve Mile Ck
GoodHutchinson County, South Dakota · 7E of Dimock · Structure no. 000000034134020
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 90 ft
- 1 main span
- Daily traffic
- 257
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
270 ST over Twelve Mile Ck is a steel stringer/multi-beam or girder carrying 270 ST over Twelve Mile Ck in Hutchinson County, South Dakota. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 257 vehicles a day, roughly 1% of them trucks, projected to reach 257 by 2032. The structure is 90 ft (27.4 m) long and 32 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 270 ST over Twelve Mile Ck built?
It was built in 2020, making it 5 years old in 2025.
What condition is 270 ST over Twelve Mile 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 May 2024.
How much traffic does 270 ST over Twelve Mile Ck carry?
About 257 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is 270 ST over Twelve Mile Ck?
The structure is 90 ft (27.4 m) long with a longest span of 89 ft (27.1 m) and a deck 32 ft wide.
Who owns 270 ST over Twelve Mile Ck?
It is owned by the County Highway Agency.