State Route 78 over East Highline Canal
GoodImperial County, California · 11-IMP-078-27.28 · Structure no. 58 0316
- Built
- 1963
- 62 years old, rebuilt 1993
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 137 ft
- 5 main spans
- Daily traffic
- 1,800
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 78 over East Highline Canal is a concrete continuous slab carrying State Route 78 over East Highline Canal in Imperial County, California. It was built in 1963 and reconstructed in 1993, so it is 62 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 1,800 vehicles a day, roughly 27% of them trucks, projected to reach 7,101 by 2046. The structure is 137 ft (41.8 m) long and 43 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 State Route 78 over East Highline Canal built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1993.
What condition is State Route 78 over East Highline Canal 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 East Highline Canal carry?
About 1,800 vehicles per day (2019 count), of which roughly 27% are trucks.
How long is State Route 78 over East Highline Canal?
The structure is 137 ft (41.8 m) long with a longest span of 43 ft (13.2 m) and a deck 43 ft wide.
Who owns State Route 78 over East Highline Canal?
It is owned by the State Highway Agency.