Bike crash hotspots in San Francisco, CA
56 bike crashes were reported in San Francisco from 2021–2025, 11 of them serious or fatal (3 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 San Francisco (90 crashes)
How people on bikes get hit in San Francisco
- 20% were side-impact crashes at junctions (drivers pulling out or turning across).
- 25% were sideswipes (close passes, right hooks, car doors).
- 18% happened after dark.
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
1. US-101 & Alexander Ave U/C
7 crashes · 2 serious or fatalFalls and fixed objects
4 of 7 crashes were a fall or hitting an object, with no other vehicle involved. Traffic is posted at about 45 mph.
- → Watch the surface here: potholes, drain grates, rail tracks and gravel. Cross tracks at a right angle.
- → Traffic is fast here. A quieter parallel street is often worth the extra minutes.
2. US-101 (Ggb West Sidewalk) & Conzelman Rd
4 crashes · 1 serious or fatalClose passes and cars turning alongside
3 of 4 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door.
- → Ride at least 4 feet from parked cars to stay out of the door zone, and watch for drivers who overtake and then turn right across you.
3. US-101 (Ggb East Sidewalk) & Golden Gate Bridge South Tower
3 crashes · 1 serious or fatalFalls and fixed objects
3 of 3 crashes were a fall or hitting an object, with no other vehicle involved.
- → Watch the surface here: potholes, drain grates, rail tracks and gravel. Cross tracks at a right angle.
4. US-101 (Ggb East Sidewalk) & Ggb South Tower
3 crashesClose passes and cars turning alongside
2 of 3 crashes were sideswipes: a vehicle alongside, typically a close pass, a right hook, or an opening car door.
- → Ride at least 4 feet from parked cars to stay out of the door zone, and watch for drivers who overtake and then turn right across you.
Bike crashes in San Francisco by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 3 | 0 | |
| 2022 | 6 | 3 | |
| 2023 | 8 | 2 | |
| 2024 | 16 | 3 | |
| 2025 | 23 | 3 |
Common questions about San Francisco
- Where do the most bike crashes happen in San Francisco?
- The worst spot is US-101 & Alexander Ave U/C, with 7 reported bike crashes from 2021–2025, 2 of them serious or fatal. Next are US-101 (Ggb West Sidewalk) & Conzelman Rd (4) and US-101 (Ggb East Sidewalk) & Golden Gate Bridge South Tower (3). These counts are far too low for San Francisco, because its police reports mostly lack map locations.
- How many cyclists were killed in San Francisco?
- 3 crashes killed someone in 56 reported bike crashes in San Francisco from 2021–2025, and 11 left someone seriously hurt or killed. These counts are far too low for San Francisco, because its police reports mostly lack map locations.
- How do cyclists usually get hit in San Francisco?
- 20% were side-impact crashes at junctions (drivers pulling out or turning across). 25% were sideswipes (close passes, right hooks, car doors). 18% happened after dark.
- How many bike crashes happen in San Francisco each year?
- Reported bike crashes with map locations: 2021: 3, 2022: 6, 2023: 8, 2024: 16, 2025: 23. 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.