Interstate 8 WB over Harbison Canyon RD
GoodSan Diego County, California · 11-SD-008-R25.69 · Structure no. 57 0539L
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected July 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 134 ft
- 3 main spans
- Daily traffic
- 24,500
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 8 WB over Harbison Canyon RD is a concrete continuous tee beam carrying Interstate 8 WB over Harbison Canyon RD in San Diego County, California. It was built in 1966, so it is 59 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 24,500 vehicles a day, roughly 7% of them trucks, projected to reach 45,000 by 2044. The structure is 134 ft (40.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 8 WB over Harbison Canyon RD built?
It was built in 1966, making it 59 years old in 2025.
What condition is Interstate 8 WB over Harbison Canyon RD 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 July 2024.
How much traffic does Interstate 8 WB over Harbison Canyon RD carry?
About 24,500 vehicles per day (2014 count), of which roughly 7% are trucks.
How long is Interstate 8 WB over Harbison Canyon RD?
The structure is 134 ft (40.8 m) long with a longest span of 67 ft (20.4 m) and a deck 42 ft wide.
Who owns Interstate 8 WB over Harbison Canyon RD?
It is owned by the State Highway Agency.