Keswick Dam Road over Keswick Dam Spillway
GoodShasta County, California · 4 MI NW of Redding Ca · Structure no. SHAS-003
- Built
- 1942
- 83 years old
- Condition
- Good
- inspected September 2024
- Type
- Tee Beam
- Concrete
- Length
- 240 ft
- 4 main spans
- Daily traffic
- 1,000
- 2009 count
- Owner
- Federal
- Bureau of Reclamation
About this bridge
Keswick Dam Road over Keswick Dam Spillway is a concrete tee beam carrying Keswick Dam Road over Keswick Dam Spillway in Shasta County, California. It was built in 1942, so it is 83 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,100 by 2030. The structure is 240 ft (73.2 m) long and 25 ft wide. If it were closed, the detour would be 12.4 mi (20 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Keswick Dam Road over Keswick Dam Spillway built?
It was built in 1942, making it 83 years old in 2025.
What condition is Keswick Dam Road over Keswick Dam Spillway 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 September 2024.
How much traffic does Keswick Dam Road over Keswick Dam Spillway carry?
About 1,000 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is Keswick Dam Road over Keswick Dam Spillway?
The structure is 240 ft (73.2 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.
Who owns Keswick Dam Road over Keswick Dam Spillway?
It is owned by the Bureau of Reclamation.