Douglas County, Ore. 13 Sept 24- Oregon State Police responded to a two-vehicle crash on Hwy-101, near milepost 202, in Douglas County. The preliminary investigation indicated a southbound Ford F150, operated by Robin Miles Bihm (26) of Coos Bay, failed to negotiate a left hand curve. The Ford traveled onto the southbound shoulder, overcorrected back onto the roadway, and entered the northbound lane. The Ford struck a northbound Toyota Tundra, operated by Alan Kent Mcilhenny (72) of Tonasket (WA), head on. The operator of the Ford (Bihm) suffered reported serious injuries and was transported to an area hospital. The operator of the Toyota (A. Mcilhenny) and passengers; Barbara Jean Mcilhenny (74) of Tonasket (WA) and James Otis Wells (79) of Tonasket (WA); suffered serious injuries and were transported to an area hospital. A fourth occupant of the Toyota, Margaret Ann Wells (76) of Tonasket (WA), was declared deceased after transport to an area hospital. The highway was impacted for approximately three hours during the on-scene investigation. The cause of the crash is under investigation, however impairment is being considered a primary cause at this time. OSP was assisted by Gardiner Fire, Reedsport Police Department, Douglas County Sheriff's Office, and ODOT.