Where do crashes happen most often on SR-91?

The short answer: From October 23, 2025 through October 22, 2026, the SR-91 corridor recorded 5,343 matching crash records. Among the locations identified in those records, Anaheim had the highest number of records with 1,658 matches. This is a count of records, not an exposure-adjusted measure of danger. View the reproducible table or read the methodology and limitations.

For reporters and researchers

Need a publication-ready corridor map, reproducible local table, or data-quality review? Contact Meru AI about research and analysis.

Discuss a data project
Corridor Heat Map

SR-91 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: 5,343 records
Loading crash coordinatesBlue record-onlyYellow injuryRed fatal
© OpenStreetMap contributors
Year-over-year records

How reported SR-91 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 SR-91

Anaheim1,658 crashes
Riverside967 crashes
Corona740 crashes
Cerritos344 crashes
Long Beach335 crashes
Bellflower268 crashes
Unincorporated258 crashes
Buena Park247 crashes
Fullerton104 crashes
Carson95 crashes

Direction of Travel Split

2,262
Other/Unknown
1,481
W/B
1,471
E/B
65
N/B
64
S/B

Severity & Casualties Summary

4
People reported killed
2,552
Injuries (People)

Reported Lane Patterns

usable
85.0%
Lane data coverage
11
Anomalies (Lane > Total)

Most Frequent Recorded Lanes

lane 1 / total 51,133 records
lane 4 / total 5838 records
lane 1 / total 6750 records
lane 3 / total 5692 records

Sideswipe Context

Of the sideswipes with clear lane details, 1,076 crossed multiple reported lanes (lane-departure context), while 222 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.

Download the data

Locations with the most matching SR-91 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.

Embed map
Top locations in matching SR-91 crash records
RankRecorded cityCrashesSerious or fatalPeople killed
1Anaheim1,658312
2Riverside967120
3Corona740161
4Cerritos34460
5Long Beach33540
6Bellflower26841
7Unincorporated25830
8Buena Park24720
9Fullerton10410
10Carson9530
Methodology

How this corridor profile is produced

No applied canonical mapping exists for SR-91 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. "SR-91 Highway Crash Records Profile." Updated Oct 22, 2026. https://crashes.meruai.co/california/roads/sr-91. Analysis of California Crash Reporting System public records.
Read the methodology