A 30-year-old woman died early Wednesday after slamming into the back of a semitrailer that had pulled over on state Route 512 in Parkland, according to the State Patrol.
As investigators worked to clear that scene, a suspected drunken driver plowed into the back of a state Department of Transportation vehicle that was putting up signs.
The first crash occurred about 2:30 a.m. in the eastbound lanes near state Route 7.
Troopers said Kati Shackelford, who was driving a Volkswagon GTI, did not hit the brakes before striking the back of the semitrailer. She was traveling at least 60 mph.
It’s unknown whether Shackelford did not see the truck or whether she was impaired.
About a quarter-mile west of the scene, a WSDOT worker was setting up a sign warning drivers of the slowdown when she noticed a vehicle driving straight toward her.
The worker was able to dive over a barrier before a Honda CRV plowed into the back of the WSDOT truck, which had its emergency lights flashing.
The 21-year-old driver in that collision suffered minor injuries but her passenger was taken to the hospital with serious injuries, including a broken leg.
The Puyallup woman was believed to be intoxicated and was booked into Pierce County Jail on Wednesday night on suspicion of vehicular assault.
All lanes reopened about 6:20 a.m.
Staff writer Kenny Ocker contributed to this report.
Stacia Glenn: 253-597-8653