N405-CENTURY Bl of over Imperial Highway
FairLos Angeles County, California · 07-LA-405-R21.22-LA · Structure no. 53 1241S
- Built
- 1963
- 62 years old, rebuilt 1994
- Condition
- Fair
- inspected November 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 158 ft
- 3 main spans
- Daily traffic
- 21,871
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
N405-CENTURY Bl of over Imperial Highway is a concrete continuous box beam or girders - multiple carrying N405-CENTURY Bl of over Imperial Highway in Los Angeles County, California. It was built in 1963 and reconstructed in 1994, 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 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 21,871 vehicles a day, roughly 1% of them trucks, projected to reach 11,728 by 2041. The structure is 158 ft (48.2 m) long and 39 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-CENTURY Bl of over Imperial Highway built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1994.
What condition is N405-CENTURY Bl of over Imperial Highway 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-CENTURY Bl of over Imperial Highway carry?
About 21,871 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is N405-CENTURY Bl of over Imperial Highway?
The structure is 158 ft (48.2 m) long with a longest span of 101 ft (30.8 m) and a deck 39 ft wide.
Who owns N405-CENTURY Bl of over Imperial Highway?
It is owned by the State Highway Agency.