Costa Mesa intersections ranked by reported crashes
35 confirmed surface-street junctions in Costa Mesa, Orange County, carrying 617 reported crashes between them in 2023, 2024 and 2025. 48 junctions were attempted here and 35 could be confirmed by two independent sources; the rest were dropped rather than guessed at.
This is a count of reported crashes, not a measure of risk. It is not adjusted for traffic volume, and a difference of two or three crashes between neighbouring rows is within ordinary year-to-year variation rather than a real gap. It says nothing about fault or about any individual claim.
| # | Junction | County | Crashes | Injured | Killed | 2026 so far part year, not ranked |
|---|---|---|---|---|---|---|
| 1 | Adams Av & Harbor Bl | Orange | 38 | 25 | 0 | 12 |
| 2 | Gisler Av & Harbor Bl | Orange | 34 | 28 | 0 | 10 |
| 3 | Harbor Bl & Victoria St | Orange | 34 | 25 | 0 | 6 |
| 4 | Broadway & Newport Bl | Orange | 30 | 24 | 1 | 2 |
| 5 | Anton Bl & Bristol St | Orange | 30 | 23 | 0 | 1 |
| 6 | 19TH St & Newport Bl | Orange | 29 | 15 | 0 | 11 |
| 7 | Fair Dr & Harbor Bl | Orange | 24 | 26 | 0 | 3 |
| 8 | Fairview Rd & South Coast Dr | Orange | 23 | 26 | 0 | 8 |
| 9 | Harbor Bl & Wilson St | Orange | 23 | 16 | 0 | 10 |
| 10 | Del Mar Av & Newport Bl | Orange | 22 | 11 | 0 | 5 |
| 11 | Placentia Av & Victoria St | Orange | 20 | 22 | 0 | none reported yet |
| 12 | Newport Bl & Victoria St | Orange | 20 | 16 | 0 | 7 |
| 13 | Harbor Bl & Newport Bl | Orange | 19 | 11 | 1 | 1 |
| 14 | 22ND St & Newport Bl | Orange | 18 | 12 | 0 | 2 |
| 15 | Baker St & Harbor Bl | Orange | 17 | 16 | 0 | 6 |
| 16 | 19TH St & Pomona Av | Orange | 17 | 11 | 0 | none reported yet |
| 17 | Hamilton St & Harbor Bl | Orange | 16 | 14 | 0 | 2 |
| 18 | Newport Bl & Rochester St | Orange | 13 | 13 | 0 | 2 |
| 19 | 19TH St & Harbor Bl | Orange | 13 | 12 | 0 | 6 |
| 20 | Harbor Bl & Sunflower Av | Orange | 13 | 11 | 0 | 3 |
| 21 | 19TH St & Placentia Av | Orange | 13 | 11 | 0 | 3 |
| 22 | Bear St & South Coast Dr | Orange | 12 | 13 | 0 | 3 |
| 23 | 16TH St & Newport Bl | Orange | 12 | 12 | 0 | 3 |
| 24 | Anton Bl & Avenue Of The Arts | Orange | 12 | 11 | 0 | 2 |
| 25 | Baker St & Fairview Rd | Orange | 11 | 12 | 0 | 3 |
| 26 | Industrial Wy & Newport Bl | Orange | 11 | 10 | 0 | 3 |
| 27 | Bristol St & Paularino Av | Orange | 11 | 10 | 0 | 1 |
| 28 | Placentia Av & Wilson St | Orange | 11 | 10 | 0 | 3 |
| 29 | Hamilton St & Pomona Av | Orange | 11 | 7 | 0 | 3 |
| 30 | Fairview Rd & W Baker St | Orange | 10 | 15 | 0 | none reported yet |
| 31 | E 17TH St & Tustin Av | Orange | 10 | 12 | 0 | none reported yet |
| 32 | Harbor Bl & W Baker St | Orange | 10 | 11 | 0 | none reported yet |
| 33 | Placentia Av & W 19TH St | Orange | 10 | 10 | 0 | none reported yet |
| 34 | Bristol St & W Baker St | Orange | 10 | 10 | 0 | none reported yet |
| 35 | Newport Bl & W 19TH St | Orange | 10 | 5 | 0 | none reported yet |
This ranking covers 2023–2025. The 2026 figures are separate. They run from January to August 2026 — every whole month the state has published so far — and they are not part of the ranking or of any total above. Police agencies file at different speeds, so putting a part-reported year in a ranking would order agencies by how fast they file rather than roads by how often they are hit.
Recent months are still filling in, so treat them as a floor rather than a count. August 2026 held about 48% of what that month averaged across 2023–2025 when this data was compiled, so its real total will be higher. September 2026 is left out entirely: the state's file stops on 2026-09-01, so that month holds 15 records — a part of a month rather than a month that is late being filed.
Reporting runs at different speeds from one police department to the next, so this matters more than the statewide figure: Costa Mesa has filed 802 crashes for January–August 2026, against about 890 predicted by the same 2023–2025 crash rate — roughly 90%. So "none reported yet" in the 2026 column means no report has arrived for that junction, which is not the same as no crash happening there.
Sources: California Crash Reporting System (CCRS), California Highway Patrol; locations from the US Census Geocoder, each confirmed by a second independent source to within 50 metres. Method and limitations: methodology.