Fremont, CA, February 25, 2025 – A motorcyclist sustained serious injuries in a multi-vehicle crash that occurred Monday afternoon on Interstate 680 in Fremont, according to the California Highway Patrol. The incident happened at approximately 3:10 p.m. on the northbound I-680 Freeway near the junction with Highway 238. Initial reports indicate that the motorcyclist was involved in a collision with a vehicle under unclear circumstances. Moments later, the motorcycle was struck by a passing semi-truck, further worsening the situation. Emergency responders arrived quickly and transported the injured rider to a local hospital for treatment of serious injuries. The identity of the motorcyclist and their current condition have not been disclosed. Authorities are still investigating the crash to determine the exact sequence of events. No additional details have been made available at this time.