29120 383rd Avenue over Drainage Ditch
PoorCharles Mix County, South Dakota · 0.3N & 1.0E of Lake Andes · Structure no. 000000012390232
- Built
- 1930
- 95 years old
- Condition
- Poor
- inspected October 2023
- Type
- Slab
- Concrete Continuous
- Length
- 53 ft
- 3 main spans
- Daily traffic
- 4
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
29120 383rd Avenue over Drainage Ditch is a concrete continuous slab carrying 29120 383rd Avenue over Drainage Ditch in Charles Mix County, South Dakota. It was built in 1930, 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.
It carries about 4 vehicles a day, roughly 2% of them trucks, projected to reach 4 by 2032. The structure is 53 ft (16.1 m) long and 22 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 29120 383rd Avenue over Drainage Ditch built?
It was built in 1930, making it 95 years old in 2025.
What condition is 29120 383rd Avenue over Drainage Ditch 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 October 2023.
How much traffic does 29120 383rd Avenue over Drainage Ditch carry?
About 4 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 29120 383rd Avenue over Drainage Ditch?
The structure is 53 ft (16.1 m) long with a longest span of 16 ft (4.9 m) and a deck 22 ft wide.
Who owns 29120 383rd Avenue over Drainage Ditch?
It is owned by the County Highway Agency.