Troopers arrested a Gig Harbor driver after he hit a motorcyclist on Interstate 5 in Thurston County Tuesday night, according to the State Patrol.
The wreck occurred before 10 p.m. at milepost 93, which is just north of Grand Mound.
The Gig Harbor driver, a 51-year-old in a BMW, changed lanes as he traveled north and hit a 19-year-old motorcyclist from Salem, Oregon, according to a Washington State Patrol memo. The wreck reportedly pushed the motorcyclist onto the left shoulder where he struck a barrier…