N405-E&W118 Conn over I 405 SR 118 Chatswrth
FairLos Angeles County, California · 07-LA-405-46.80-LA · Structure no. 53 2216G
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 3,753 ft
- 9 main spans
- Daily traffic
- 40,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
N405-E&W118 Conn over I 405 SR 118 Chatswrth is a prestressed concrete continuous box beam or girders - multiple carrying N405-E&W118 Conn over I 405 SR 118 Chatswrth in Los Angeles County, California. It was built in 1977, so it is 48 years old, younger 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 40,000 vehicles a day, roughly 5% of them trucks, projected to reach 58,867 by 2041. The structure is 3,753 ft (1,143.9 m) long and 66 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 N405-E&W118 Conn over I 405 SR 118 Chatswrth built?
It was built in 1977, making it 48 years old in 2025.
What condition is N405-E&W118 Conn over I 405 SR 118 Chatswrth 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 N405-E&W118 Conn over I 405 SR 118 Chatswrth carry?
About 40,000 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is N405-E&W118 Conn over I 405 SR 118 Chatswrth?
The structure is 3,753 ft (1,143.9 m) long with a longest span of 195 ft (59.4 m) and a deck 66 ft wide.
Who owns N405-E&W118 Conn over I 405 SR 118 Chatswrth?
It is owned by the State Highway Agency.