Interstate 8 over Alamo River
GoodImperial County, California · 11-IMP-008-R49.75 · Structure no. 58 0219
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 54 ft
- 2 main spans
- Daily traffic
- 11,400
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 8 over Alamo River is a concrete continuous culvert carrying Interstate 8 over Alamo River in Imperial County, California. It was built in 1971, so it is 54 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 11,400 vehicles a day, roughly 20% of them trucks, projected to reach 13,670 by 2042. The structure is 54 ft (16.5 m) long and 89 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 8 over Alamo River built?
It was built in 1971, making it 54 years old in 2025.
What condition is Interstate 8 over Alamo River 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 Interstate 8 over Alamo River carry?
About 11,400 vehicles per day (2020 count), of which roughly 20% are trucks.
How long is Interstate 8 over Alamo River?
The structure is 54 ft (16.5 m) long with a longest span of 25 ft (7.6 m) and a deck 89 ft wide.
Who owns Interstate 8 over Alamo River?
It is owned by the State Highway Agency.