Where do crashes happen most often on I-405?

The short answer: From October 23, 2025 through October 22, 2026, the I-405 corridor recorded 6,356 matching crash records. Among the locations identified in those records, Los Angeles had the highest number of records with 2,318 matches. This is a count of records, not an exposure-adjusted measure of danger. View the reproducible table or read the methodology and limitations.

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Corridor Heat Map

I-405 crash-record density

Adjust the window from the profile start date. The map redraws to show only loaded mappable records inside that date range.

0
Plotted records in window
Profile starts Oct 23, 2025Showing Oct 23, 2025 to Oct 22, 2026
1 month from start3 months6 months9 monthsFull profile year
Window: Oct 23, 2025 to Oct 22, 2026
Loaded map records: 0 maximum client sample
Full profile count: 6,356 records
Loading crash coordinatesBlue record-onlyYellow injuryRed fatal
© OpenStreetMap contributors
Year-over-year records

How reported I-405 crashes compare by year

Annual counts use the same road-matching method as this profile. The latest year may be incomplete if the source data has not reached year end.

2021 to 2026
Bars show reported crash-record counts, not risk rates or traffic-volume-adjusted danger.

Top Incident Locations along I-405

Los Angeles2,318 crashes
Long Beach709 crashes
Unincorporated498 crashes
Irvine417 crashes
Seal Beach337 crashes
Carson320 crashes
Costa Mesa276 crashes
Inglewood240 crashes
Torrance223 crashes
Culver City218 crashes

Direction of Travel Split

2,784
S/B
2,582
N/B
948
Other/Unknown
25
E/B
17
W/B

Severity & Casualties Summary

18
People reported killed
3,069
Injuries (People)

Reported Lane Patterns

usable
82.9%
Lane data coverage
12
Anomalies (Lane > Total)

Most Frequent Recorded Lanes

lane 1 / total 51,586 records
lane 1 / total 61,322 records
lane 4 / total 51,121 records
lane 4 / total 6823 records

Sideswipe Context

Of the sideswipes with clear lane details, 1,187 crossed multiple reported lanes (lane-departure context), while 290 occurred within a single lane.

Note: Lane numbers are officer-reported (e.g. "Lane 1" is typically the fast lane). They are useful for local review but do not reflect verified road geometry.

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Locations with the most matching I-405 records

Counts reflect the road labels and city fields recorded in the source data for this reporting window. They do not account for traffic volume, road miles, or time spent traveling.

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Top locations in matching I-405 crash records
RankRecorded cityCrashesSerious or fatalPeople killed
1Los Angeles2,318359
2Long Beach709152
3Unincorporated49830
4Irvine41780
5Seal Beach33721
6Carson32060
7Costa Mesa27660
8Inglewood24091
9Torrance22340
10Culver City21810
Methodology

How this corridor profile is produced

No applied canonical mapping exists for I-405 yet, so this profile temporarily uses the legacy curated alias matcher against the officer-recorded primary-road label. The reporting window is 2025-10-23 through 2026-10-22. Source records come from the California Highway Patrol California Crash Reporting System.

Read the full methodology and privacy notes
Limitations

What the numbers cannot establish

  • Raw crash counts do not measure individual risk or identify the “most dangerous” segment.
  • Traffic volume, vehicle miles traveled, road length, construction, and enforcement exposure are not controlled here.
  • Road and city labels can be incomplete, inconsistent, or revised after publication.

Cite or reuse this profile

This is independent analysis of public records. Keep the reporting window, source, and methodology attached when reusing a figure.

Evidence for Zero. "I-405 Highway Crash Records Profile." Updated Oct 22, 2026. https://crashes.meruai.co/california/roads/i-405. Analysis of California Crash Reporting System public records.
Read the methodology