Bike crash hotspots in Brentwood, CA
73 bike crashes were reported in Brentwood from 2021–2025, 11 of them serious or fatal. Below are the spots where they keep happening, what usually goes wrong at each one, and what to watch for.
Also: Pedestrian crash hotspots in Brentwood (56 crashes)
How people on bikes get hit in Brentwood
- 34% were side-impact crashes at junctions (drivers pulling out or turning across).
- 18% were sideswipes (close passes, right hooks, car doors).
- 11% happened after dark.
- 14% were hit-and-run.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
1. Sycamore Av & Brentwood Bl
6 crashes · 1 serious or fatalA mix of crash types
50% were hit-and-run.
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
2. Brentwood Bl & Oak St
5 crashes · 1 serious or fatalSide-impact crashes at the junction
2 of 5 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. 40% happened after dark.
- → 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.
- → Use a front and rear light, even on lit streets.
3. Somersby Wy & Minnesota Av
3 crashes · 1 serious or fatalA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
4. Balfour Rd & Rt 4
4 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
5. Minnesota Av & St Martins Pl
3 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
6. Brentwood Bl & Spruce St
3 crashesA mix of crash types
- → No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
Bike crashes in Brentwood by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 4 | 1 | |
| 2022 | 16 | 1 | |
| 2023 | 17 | 4 | |
| 2024 | 20 | 1 | |
| 2025 | 16 | 4 |
Common questions about Brentwood
- Where do the most bike crashes happen in Brentwood?
- The worst spot is Sycamore Av & Brentwood Bl, with 6 reported bike crashes from 2021–2025, 1 of them serious or fatal. Next are Brentwood Bl & Oak St (5) and Somersby Wy & Minnesota Av (3).
- How many cyclists were killed in Brentwood?
- No deaths were reported in 73 reported bike crashes in Brentwood from 2021–2025, and 11 left someone seriously hurt or killed.
- How do cyclists usually get hit in Brentwood?
- 34% were side-impact crashes at junctions (drivers pulling out or turning across). 18% were sideswipes (close passes, right hooks, car doors). 11% happened after dark. 14% were hit-and-run.
- How many bike crashes happen in Brentwood each year?
- Reported bike crashes with map locations: 2021: 4, 2022: 16, 2023: 17, 2024: 20, 2025: 16. 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. Only crashes reported with map coordinates are counted, so the real totals are higher.
Nearby cities
Source: California Crash Reporting System (CCRS), 2021–2025. Only crashes reported with map coordinates are counted, and many city police reports have none, so these numbers are lower than the real total. Busy streets show more crashes partly because more people use them. Data last rebuilt 2026-09-22. How the data works.