415th Avenue over Crow Creek Ditch
PoorMarshall County, South Dakota · 2.2N of Amherst · Structure no. 000000046030112
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected August 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 35 ft
- 1 main span
- Daily traffic
- 322
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
415th Avenue over Crow Creek Ditch is a prestressed concrete tee beam carrying 415th Avenue over Crow Creek Ditch in Marshall County, South Dakota. It was built in 1974, so it is 51 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 322 vehicles a day, roughly 3% of them trucks, projected to reach 322 by 2032. The structure is 35 ft (10.7 m) long and 31 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 415th Avenue over Crow Creek Ditch built?
It was built in 1974, making it 51 years old in 2025.
What condition is 415th Avenue over Crow Creek 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 August 2024.
How much traffic does 415th Avenue over Crow Creek Ditch carry?
About 322 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 415th Avenue over Crow Creek Ditch?
The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.
Who owns 415th Avenue over Crow Creek Ditch?
It is owned by the County Highway Agency.