470th Avenue over Snake Creek
PoorLincoln County, South Dakota · 5.8S & 4E of Lennox · Structure no. 000000042060168
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 32 ft
- 2 main spans
- Daily traffic
- 50
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
470th Avenue over Snake Creek is a concrete continuous slab carrying 470th Avenue over Snake Creek in Lincoln County, South Dakota. It was built in 1935, so it is 90 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2032. The structure is 32 ft (9.9 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 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 470th Avenue over Snake Creek built?
It was built in 1935, making it 90 years old in 2025.
What condition is 470th Avenue over Snake 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 May 2024.
How much traffic does 470th Avenue over Snake Creek carry?
About 50 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 470th Avenue over Snake Creek?
The structure is 32 ft (9.9 m) long with a longest span of 16 ft (4.8 m) and a deck 20 ft wide.
Who owns 470th Avenue over Snake Creek?
It is owned by the County Highway Agency.