311 Avenue over Dog Ear Ck
PoorPosted for loadTripp County, South Dakota · 7E & 5.8N Witten · Structure no. 000000062150172
- Built
- 1963
- 62 years old
- Condition
- Poor
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 31
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
311 Avenue over Dog Ear Ck is a wood or timber stringer/multi-beam or girder carrying 311 Avenue over Dog Ear Ck in Tripp County, South Dakota. It was built in 1963, so it is 62 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 31 vehicles a day, roughly 2% of them trucks, projected to reach 31 by 2032. The structure is 38 ft (11.6 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 311 Avenue over Dog Ear Ck built?
It was built in 1963, making it 62 years old in 2025.
What condition is 311 Avenue over Dog Ear 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 June 2023.
How much traffic does 311 Avenue over Dog Ear Ck carry?
About 31 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 311 Avenue over Dog Ear Ck?
The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.5 m) and a deck 20 ft wide.
Who owns 311 Avenue over Dog Ear Ck?
It is owned by the County Highway Agency.