Bike crashes on 17th St, Costa Mesa

We don't rate streets as safe or unsafe: crash counts can't say how risky a street is, and busy streets have more crashes partly because more people use them. This page covers traffic crashes, not crime. What the records show: 29 bike crashes were reported on 17th St in Costa Mesa from 2021–2025, 5 of them serious or fatal. The most were at 17th St & Santa Ana Ave (4). 52% were side-impact crashes at junctions (drivers pulling out or turning across). 10% were sideswipes (close passes, right hooks, car doors).

• 52% were side-impact crashes at junctions (drivers pulling out or turning across).
• 10% were sideswipes (close passes, right hooks, car doors).
• 7% happened after dark.

1. 17th St & Santa Ana Ave

   4 crashes · 3 serious or fatal

   A mix of crash types

   • No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
   See it on the map

2. 17th St & Tustin Ave

   9 crashes

   Side-impact crashes at the junction

   5 of 9 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.

   • Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
   See it on the map

3. 17th St & Superior Ave

   7 crashes

   Side-impact crashes at the junction

   6 of 7 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.

   • Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
   See it on the map

4. 17th St & Pomona Ave

   4 crashes · 1 serious or fatal

   Side-impact crashes at the junction

   3 of 4 crashes were broadside: a vehicle hit at an angle, usually a driver pulling out of a side street or driveway, turning across, or running the signal.

   • Slow down approaching the junction, watch drivers' front wheels at side streets and driveways, and don't assume a driver waiting to turn has seen you.
   See it on the map

5. 17th St & Placentia Ave

   3 crashes

   A mix of crash types

   • No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
   See it on the map

Spots with 3 or more reported crashes within about 250 m, worst first.

The busiest hour was 3 p.m..

Where on 17th St do the most bike crashes happen?

17th St & Santa Ana Ave, with 4 reported bike crashes from 2021–2025, 3 of them serious or fatal. Next are 17th St & Tustin Ave (9) and 17th St & Superior Ave (7).

How do cyclists usually get hit on 17th St?

52% were side-impact crashes at junctions (drivers pulling out or turning across). 10% were sideswipes (close passes, right hooks, car doors). 7% happened after dark.

How many bike crashes happen on 17th St each year?

Reported bike crashes on 17th St in Costa Mesa: 2021: 5, 2022: 5, 2023: 6, 2024: 8, 2025: 5. The latest year can rise as late reports come in.

Where does this data come from?

Police crash reports in the California Crash Reporting System (CCRS), published by the state on data.ca.gov, counted by the street each report names first. Only crashes reported with map coordinates are counted, so the real totals are higher.