30010 400th Avenue over Choteau Creek
PoorPosted for loadCharles Mix County, South Dakota · 0.1S of Dante · Structure no. 000000012560321
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 166 ft
- 3 main spans
- Daily traffic
- 205
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
30010 400th Avenue over Choteau Creek is a steel continuous stringer/multi-beam or girder carrying 30010 400th Avenue over Choteau Creek in Charles Mix County, South Dakota. It was built in 1958, so it is 67 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 205 vehicles a day, roughly 3% of them trucks, projected to reach 205 by 2032. The structure is 166 ft (50.7 m) long and 26 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 30010 400th Avenue over Choteau Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is 30010 400th Avenue over Choteau Creek 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 September 2023.
How much traffic does 30010 400th Avenue over Choteau Creek carry?
About 205 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 30010 400th Avenue over Choteau Creek?
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 30010 400th Avenue over Choteau Creek?
It is owned by the County Highway Agency.