County RD over Rock Ck
PoorPosted for loadMiner County, South Dakota · 2.3E Carthage · Structure no. 000000049093020
- Built
- 1930
- 95 years old, rebuilt 1966
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 32 ft
- 1 main span
- Daily traffic
- 228
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
County RD over Rock Ck is a steel stringer/multi-beam or girder carrying County RD over Rock Ck in Miner County, South Dakota. It was built in 1930 and reconstructed in 1966, so it is 95 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 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. Its operating status is: posted for load restriction.
It carries about 228 vehicles a day, roughly 3% of them trucks, projected to reach 228 by 2032. The structure is 32 ft (9.8 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County RD over Rock Ck built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1966.
What condition is County RD over Rock 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 August 2024.
How much traffic does County RD over Rock Ck carry?
About 228 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is County RD over Rock Ck?
The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.
Who owns County RD over Rock Ck?
It is owned by the County Highway Agency.