229 ST over Rock Ck
GoodMiner County, South Dakota · 7S & 2.6E Carthage · Structure no. 000000049096090
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected August 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 35
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
229 ST over Rock Ck is a prestressed concrete tee beam carrying 229 ST over Rock Ck in Miner 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 35 vehicles a day, roughly 3% of them trucks, projected to reach 35 by 2032. The structure is 60 ft (18.4 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 229 ST over Rock Ck built?
It was built in 2020, making it 5 years old in 2025.
What condition is 229 ST over Rock 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 August 2024.
How much traffic does 229 ST over Rock Ck carry?
About 35 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 229 ST over Rock Ck?
The structure is 60 ft (18.4 m) long with a longest span of 57 ft (17.4 m) and a deck 33 ft wide.
Who owns 229 ST over Rock Ck?
It is owned by the County Highway Agency.