147 Street over Ck
PoorGrant County, South Dakota · 6.9W & 2N Milbank · Structure no. 000000026221050
- Built
- 1926
- 99 years old
- Condition
- Poor
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 52 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
147 Street over Ck is a concrete continuous slab carrying 147 Street over Ck in Grant County, South Dakota. It was built in 1926, so it is 99 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.
It carries about 100 vehicles a day, roughly 2% of them trucks, projected to reach 100 by 2032. The structure is 52 ft (15.8 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 147 Street over Ck built?
It was built in 1926, making it 99 years old in 2025.
What condition is 147 Street over 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 147 Street over Ck carry?
About 100 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 147 Street over Ck?
The structure is 52 ft (15.8 m) long with a longest span of 17 ft (5.2 m) and a deck 20 ft wide.
Who owns 147 Street over Ck?
It is owned by the County Highway Agency.