San Francisco, CA (September 4, 2025) – A traffic collision resulting in injuries was reported Wednesday evening near the southbound I-280 off-ramp at 18th St and Mariposa in San Francisco. The crash occurred around 7:04 p.m., prompting a Code 3 emergency response with lights and sirens from San Francisco Fire and EMS crews.
Emergency responders arrived quickly to assist injured individuals. At least one person required immediate medical attention at the scene. Authorities have not released the total number of victims or the extent of their injuries, but ambulance personnel remained on site to evaluate those involved and determine the need for hospital transport.
Traffic in the area was impacted as rescue teams worked to secure the crash site, located along a heavily trafficked freeway exit. The exact cause of the crash remains under investigation by local officials.
Our thoughts are with those injured, and we hope for their complete and timely recovery.
Freeway Off-Ramp Collisions in California
Off-ramps are often overlooked in crash statistics, yet they are high-risk zones for serious accidents. The sharp transition from highway speeds to surface-level traffic can be challenging—especially when drivers fail to adjust their speed, misjudge the exit curve, or encounter slowed or stopped vehicles ahead.
In areas like the 18th St and Mariposa off-ramp from I-280, evening congestion and limited sightlines further increase the potential for injury-causing collisions. Emergency responders often operate in tight quarters at off-ramp locations, with fast-moving traffic nearby and limited access points for rescue vehicles.
Drivers are reminded to slow down well before reaching an exit, avoid lane changes near off-ramps, and stay alert for merging or slowing traffic. These simple adjustments can make a significant difference in avoiding rear-end collisions and other exit-related crashes.
At Local Accident Reports, we provide resources and support for individuals hurt in all types of roadway crashes, including those involving freeway exits and interchanges. Whether you need help with recovery, insurance navigation, or legal questions, we’re here to guide you.
When a crash happens near a busy off-ramp, the confusion can be overwhelming. Local Accident Reports offers clear information and compassionate support to help you move forward. If you or a loved one was injured near the 18th St off-ramp on I-280, contact us today to begin your recovery process with clarity and confidence.
