Aetna Springs RD over Swartz Creek
GoodNapa County, California · 0.8 MI W Pope Valley RD · Structure no. 21C0046
- Built
- 1912
- 113 years old
- Condition
- Good
- inspected May 2024
- Type
- Arch - Deck
- Masonry
- Length
- 54 ft
- 1 main span
- Daily traffic
- 346
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Aetna Springs RD over Swartz Creek is a masonry arch - deck carrying Aetna Springs RD over Swartz Creek in Napa County, California. It was built in 1912, so it is 113 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 346 vehicles a day, roughly 10% of them trucks, projected to reach 163 by 2043. The structure is 54 ft (16.5 m) long and 19 ft wide. If it were closed, the detour would be 16.2 mi (26 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Aetna Springs RD over Swartz Creek built?
It was built in 1912, making it 113 years old in 2025.
What condition is Aetna Springs RD over Swartz Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does Aetna Springs RD over Swartz Creek carry?
About 346 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is Aetna Springs RD over Swartz Creek?
The structure is 54 ft (16.5 m) long with a longest span of 42 ft (12.8 m) and a deck 19 ft wide.
Who owns Aetna Springs RD over Swartz Creek?
It is owned by the County Highway Agency.