Radar Hill Road over Boxelder Ck
FairPennington County, South Dakota · 1.0W 0.3S Box Elder · Structure no. 000000052480282
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected April 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 966
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Radar Hill Road over Boxelder Ck is a prestressed concrete tee beam carrying Radar Hill Road over Boxelder Ck in Pennington County, South Dakota. It was built in 1989, so it is 36 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 966 vehicles a day, roughly 3% of them trucks, projected to reach 966 by 2032. The structure is 80 ft (24.4 m) long and 45 ft wide. If it were closed, the detour would be 14.3 mi (23 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Radar Hill Road over Boxelder Ck built?
It was built in 1989, making it 36 years old in 2025.
What condition is Radar Hill Road over Boxelder Ck in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does Radar Hill Road over Boxelder Ck carry?
About 966 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is Radar Hill Road over Boxelder Ck?
The structure is 80 ft (24.4 m) long with a longest span of 45 ft (13.7 m) and a deck 45 ft wide.
Who owns Radar Hill Road over Boxelder Ck?
It is owned by the Town or Township Highway Agency.