Interstate 405 over Mc Helen Ave
FairLos Angeles County, California · 07-LA-405-8.45-LBCH · Structure no. 53 1169
- Built
- 1961
- 64 years old, rebuilt 1998
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 117 ft
- 3 main spans
- Daily traffic
- 237,800
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Mc Helen Ave is a concrete continuous tee beam carrying Interstate 405 over Mc Helen Ave in Los Angeles County, California. It was built in 1961 and reconstructed in 1998, so it is 64 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 237,800 vehicles a day, roughly 4% of them trucks, projected to reach 318,783 by 2046. The structure is 117 ft (35.7 m) long and 174 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 Mc Helen Ave built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1998.
What condition is Interstate 405 over Mc Helen Ave 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 405 over Mc Helen Ave carry?
About 237,800 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is Interstate 405 over Mc Helen Ave?
The structure is 117 ft (35.7 m) long with a longest span of 63 ft (19.2 m) and a deck 174 ft wide.
Who owns Interstate 405 over Mc Helen Ave?
It is owned by the State Highway Agency.