354 Avenue over Ponca Ck
PoorPosted for loadGregory County, South Dakota · 0.2W & 3.6S St. Charles · Structure no. 000000027220326
- Built
- 1952
- 73 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 166 ft
- 3 main spans
- Daily traffic
- 189
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
354 Avenue over Ponca Ck is a steel continuous stringer/multi-beam or girder carrying 354 Avenue over Ponca Ck in Gregory County, South Dakota. It was built in 1952, so it is 73 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 3 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 189 vehicles a day, roughly 3% of them trucks, projected to reach 189 by 2032. The structure is 166 ft (50.7 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 354 Avenue over Ponca Ck built?
It was built in 1952, making it 73 years old in 2025.
What condition is 354 Avenue over Ponca 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 July 2024.
How much traffic does 354 Avenue over Ponca Ck carry?
About 189 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 354 Avenue over Ponca Ck?
The structure is 166 ft (50.7 m) long with a longest span of 64 ft (19.5 m) and a deck 26 ft wide.
Who owns 354 Avenue over Ponca Ck?
It is owned by the County Highway Agency.