N405-W105 Conn Oc over I 405 I 105 Conn
FairLos Angeles County, California · 07-LA-405-R21.01-LA · Structure no. 53 2442G
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected November 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 1,706 ft
- 11 main spans
- Daily traffic
- 19,624
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
N405-W105 Conn Oc over I 405 I 105 Conn is a prestressed concrete continuous box beam or girders - multiple carrying N405-W105 Conn Oc over I 405 I 105 Conn in Los Angeles County, California. It was built in 1991, so it is 34 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 6 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 19,624 vehicles a day, roughly 1% of them trucks, projected to reach 19,152 by 2041. The structure is 1,706 ft (520 m) long and 38 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N405-W105 Conn Oc over I 405 I 105 Conn built?
It was built in 1991, making it 34 years old in 2025.
What condition is N405-W105 Conn Oc over I 405 I 105 Conn 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 November 2024.
How much traffic does N405-W105 Conn Oc over I 405 I 105 Conn carry?
About 19,624 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is N405-W105 Conn Oc over I 405 I 105 Conn?
The structure is 1,706 ft (520 m) long with a longest span of 195 ft (59.4 m) and a deck 38 ft wide.
Who owns N405-W105 Conn Oc over I 405 I 105 Conn?
It is owned by the State Highway Agency.