Two Mount Desert Island women were killed when the vehicle they were riding in crossed the center line and struck an oncoming vehicle in Trenton Tuesday morning, the Hancock County Sheriff’s Office said.

Mary Massucco, 75, of Mount Desert and Dawn Meardy, 45, of Bar Harbor were killed in the wreck on Route 3 near Ellsworth Chainsaw.

Deputies said Massucco was operating a 2008 Pontiac Torrent that crossed the center line and collided with a Sterling commercial truck driven by Adam Keeler, 21, of Trenton.

Massucco and her passenger, Dawn Meardy, were killed by the collision.

Keeler was taken to Maine Coast Memorial Hospital for treatment.

Route 3 between Beechland and Jordan River Roads was shut down for about five hours while crews cleaned up the accident.