Lauren Perdriau Ward 47, of Los Altos Hills was killed in a accident with a big-rig near Portola Valley on Thursday afternoon, and investigators said they are looking for witnesses.

Both Perdriau Ward and the big-rig truck were going west on Alpine Road and approaching Interstate 280 when the collision occured, said California Highway Patrol Officer Art Montiel. The big-rig was in the far right hand lane but before the onramp for I280. The collision occurred on the left side of the truck. She was found between the right rear tires, Montiel said. There is no bike lane on Alpine Road. It is unclear whether the truck driver intended to enter the highway onramp or was continuing straight.

The driver of the big-rig stopped after the crash and provided a statement to investigators, but Montiel said the CHP is withholding it so as not to influence statements from other potential witnesses.

“It appears they were both traveling the same direction, westbound on Alpine, and for God knows what reason, she either ended up moving toward the truck or the truck moved to her,” Montiel said.

Alpine Road is regularly used by bicyclists and it appears Ward was exercising when the accident occurred, Montiel said.

The truck driver is a man in his 40s and the vehicle belonged to Randazzo Enterprises, Montiel said. Randazzo is a Castroville-based demolition contractor.

Anyone with information regarding the crash is asked to call the CHP at 650-369-6261.

If you or someone you know has been injured in a truck accident contact the the truck accident specialists at the Alexander Law Group, LLP by email or call 888.777.1776. All calls free and confidential.