Interstate 5 NB over California Aqueduct
FairSan Joaquin County, California · 10-SJ-005-2.00 · Structure no. 29 0187R
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected September 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 244 ft
- 2 main spans
- Daily traffic
- 11,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 NB over California Aqueduct is a concrete continuous box beam or girders - multiple carrying Interstate 5 NB over California Aqueduct in San Joaquin 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 fair condition with a lowest component rating of 5 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 11,400 vehicles a day, roughly 25% of them trucks, projected to reach 23,276 by 2046. The structure is 244 ft (74.5 m) long and 41 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 NB over California Aqueduct built?
It was built in 1966, making it 59 years old in 2025.
What condition is Interstate 5 NB over California Aqueduct 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 September 2024.
How much traffic does Interstate 5 NB over California Aqueduct carry?
About 11,400 vehicles per day (2009 count), of which roughly 25% are trucks.
How long is Interstate 5 NB over California Aqueduct?
The structure is 244 ft (74.5 m) long with a longest span of 121 ft (37 m) and a deck 41 ft wide.
Who owns Interstate 5 NB over California Aqueduct?
It is owned by the State Highway Agency.