Is INTERSTATE 405 Safe?
INTERSTATE 405 in California has a Condition Score of 70/100 (Grade B). The deck is rated 7/9, superstructure 7/9, and substructure 7/9. The bridge is not structurally deficient. Built in 1960 (66 years old), it carries 294K vehicles per day.
Condition Ratings
| Component | Rating | Scale |
|---|---|---|
| Deck | 7 | /9 |
| Superstructure | 7 | /9 |
| Substructure | 7 | /9 |
| Overall Score | 70/100 | Grade B |
Bridge Details
Year Built
1960
Daily Traffic
294K
Length
54.9m
Structurally Deficient
No
Data from the FHWA National Bridge Inventory. Last updated April 2026.