Is INTERSTATE 405 Safe?
INTERSTATE 405 in California has a Condition Score of 0/100 (Grade F). The deck is rated 0/9, superstructure 0/9, and substructure 0/9. The bridge is classified as structurally deficient. Built in 1961 (65 years old), it carries 285K vehicles per day.
Condition Ratings
| Component | Rating | Scale |
|---|---|---|
| Deck | 0 | /9 |
| Superstructure | 0 | /9 |
| Substructure | 0 | /9 |
| Overall Score | 0/100 | Grade F |
Bridge Details
Year Built
1961
Daily Traffic
285K
Length
11m
Structurally Deficient
Yes
Data from the FHWA National Bridge Inventory. Last updated April 2026.