State Route 115 over Alamo River
FairImperial County, California · 11-IMP-115-10.09 · Structure no. 58 0292
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 205 ft
- 3 main spans
- Daily traffic
- 5,400
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 115 over Alamo River is a concrete continuous tee beam carrying State Route 115 over Alamo River in Imperial County, California. It was built in 1959, so it is 66 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,400 vehicles a day, roughly 40% of them trucks, projected to reach 8,906 by 2041. The structure is 205 ft (62.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 115 over Alamo River built?
It was built in 1959, making it 66 years old in 2025.
What condition is State Route 115 over Alamo River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.
How much traffic does State Route 115 over Alamo River carry?
About 5,400 vehicles per day (2018 count), of which roughly 40% are trucks.
How long is State Route 115 over Alamo River?
The structure is 205 ft (62.5 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.
Who owns State Route 115 over Alamo River?
It is owned by the State Highway Agency.