Interstate 605 NB over San Gabriel River
GoodLos Angeles County, California · 07-LA-605-22.69-IRW · Structure no. 53 2032R
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 1,190 ft
- 13 main spans
- Daily traffic
- 81,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 605 NB over San Gabriel River is a prestressed concrete stringer/multi-beam or girder carrying Interstate 605 NB over San Gabriel River in Los Angeles County, California. It was built in 1970, so it is 55 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 81,500 vehicles a day, roughly 12% of them trucks, projected to reach 82,163 by 2045. The structure is 1,190 ft (362.7 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 605 NB over San Gabriel River built?
It was built in 1970, making it 55 years old in 2025.
What condition is Interstate 605 NB over San Gabriel 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 April 2024.
How much traffic does Interstate 605 NB over San Gabriel River carry?
About 81,500 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is Interstate 605 NB over San Gabriel River?
The structure is 1,190 ft (362.7 m) long with a longest span of 100 ft (30.5 m) and a deck 68 ft wide.
Who owns Interstate 605 NB over San Gabriel River?
It is owned by the State Highway Agency.