SD231 over Boxelder Ck
GoodPennington County, South Dakota · 0.8 S Meade CO Line · Structure no. 000000052377268
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 389 ft
- 7 main spans
- Daily traffic
- 9,071
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD231 over Boxelder Ck is a concrete continuous slab carrying SD231 over Boxelder Ck in Pennington County, South Dakota. It was built in 1974, so it is 51 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 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 9,071 vehicles a day, roughly 3% of them trucks, projected to reach 12,473 by 2044. The structure is 389 ft (118.6 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 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 SD231 over Boxelder Ck built?
It was built in 1974, making it 51 years old in 2025.
What condition is SD231 over Boxelder 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 April 2023.
How much traffic does SD231 over Boxelder Ck carry?
About 9,071 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is SD231 over Boxelder Ck?
The structure is 389 ft (118.6 m) long with a longest span of 58 ft (17.7 m) and a deck 43 ft wide.
Who owns SD231 over Boxelder Ck?
It is owned by the State Highway Agency.