Interstate 405 over Plummer Street
FairLos Angeles County, California · 07-LA-405-45.24-LA · Structure no. 53 1496
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 149 ft
- 1 main span
- Daily traffic
- 216,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Plummer Street is a concrete box beam or girders - multiple carrying Interstate 405 over Plummer Street in Los Angeles County, California. It was built in 1963, so it is 62 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 216,000 vehicles a day, roughly 4% of them trucks, projected to reach 346,255 by 2040. The structure is 149 ft (45.4 m) long and 141 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 | 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 405 over Plummer Street built?
It was built in 1963, making it 62 years old in 2025.
What condition is Interstate 405 over Plummer Street 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 2023.
How much traffic does Interstate 405 over Plummer Street carry?
About 216,000 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is Interstate 405 over Plummer Street?
The structure is 149 ft (45.4 m) long with a longest span of 90 ft (27.4 m) and a deck 141 ft wide.
Who owns Interstate 405 over Plummer Street?
It is owned by the State Highway Agency.