State Route 78 over Coachella Canal (siphon)
GoodImperial County, California · 11-IMP-078-34.16 · Structure no. 58 0342
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 1,800
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 78 over Coachella Canal (siphon) is a concrete continuous culvert carrying State Route 78 over Coachella Canal (siphon) in Imperial County, California. It was built in 1983, so it is 42 years old, younger 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 1,800 vehicles a day, roughly 25% of them trucks, projected to reach 7,101 by 2046. The structure is 23 ft (7 m) long and 66 ft wide. If it were closed, the detour would be 19.9 mi (32 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 78 over Coachella Canal (siphon) built?
It was built in 1983, making it 42 years old in 2025.
What condition is State Route 78 over Coachella Canal (siphon) 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 January 2025.
How much traffic does State Route 78 over Coachella Canal (siphon) carry?
About 1,800 vehicles per day (2019 count), of which roughly 25% are trucks.
How long is State Route 78 over Coachella Canal (siphon)?
The structure is 23 ft (7 m) long with a longest span of 12 ft (3.7 m) and a deck 66 ft wide.
Who owns State Route 78 over Coachella Canal (siphon)?
It is owned by the State Highway Agency.