LIBERTY LAKE, Wash. -

Washington State Patrol confirms one person has died in a three vehicle collision on westbound I-90 near the Liberty Lake exit.
State troopers confirm the driver, 71-year-old Laura Lafferty of Rathdrum, was killed when she tried to avoid a street sweeper vehicle in the right lane on I-90. The street sweeper moved to the left lane, striking the back of Lafferty's 2004 Chevy Tracker, which then hit the concrete barrier in the median and crashed into the upright for the overpass.
"Unfortunately it does appear the driver made a sudden movement and at high speed people often lose control. So try to keep your eyes up down the road way. Again, a tragic day here on the freeway," Washington State Patrol Trooper Jeff Sevigney said.
Lafferty, who Sevigney said was not wearing a seatbelt, was pronounced dead at the scene. A passenger in her vehicle was injured and transported to Sacred Heart Medical Center with serious injuries. He was wearing his seatbelt.
A third vehicle was hit by Lafferty's car as it was airborne and was totaled. The driver of that vehicle was not injured.
I-90 was closed for several hours while troopers carefully reconstructed what happened.
A separate accident occurred on the overpass above the freeway, likely caused by a commuter that was distracted by the wreck below.