WOOLWICH, Maine — An 84-year-old Florida man suffered head injuries and two others were hurt in a four-vehicle collision at the intersection of Route 1 and Shaw Road Thursday afternoon, a spokesman for the Sagadahoc County Sheriff’s Office said.

Paul Simpson of Bradenton, Florida, was in critical condition late Thursday night, a nursing supervisor at Maine Medical Center in Portland said. He was taken by ambulance to Mid Coast Medical Center in Brunswick and then later to Maine Medical.

Simpson’s wife, 70-year-old Gloria Simpson, and 66-year-old Martin Hayden of Brunswick, went to Mid Coast, according to the sheriff’s office. Gloria Simpson was listed as being in satisfactory condition late Thursday, a nursing supervisor said.

The accident was reported around 4:30 p.m. That’s when a 2011 Chevy pickup truck driven northbound on Route 1 by Thomas Palmer, 45, of Montpelier, Vermont, rear-ended a Toyota sedan driven by Albert Pinkham, 39, of Wiscasset, the sheriff’s office said.

The collision forced Pinkham’s sedan, which was waiting to turn left onto Shaw Road, into the southbound lane, where it hit a southbound 2015 Honda van driven by Simpson. The van then collided with a 2009 Honda SUV driven by Hayden, the sheriff’s office said.

The four vehicles were totalled. The occupants were wearing seatbelts, the sheriff’s office said.

Route 1 was cleared around 5:45 p.m.