Motorcyclist catapults off I-80 SF off-ramp

March 19, 2010 12:31:43 PM PDT
A motorcyclist suffered critical injuries this morning after his bike hit a barrier on an Interstate 80 off-ramp in San Francisco -- catapulting him over the side and onto two parked cars below.

Investigators aren't sure why the motorcyclist crashed.

No one was inside the parked cars at the time.

One lane of the Folsom Street off-ramp and Clementina Street below were closed for a short time.