CASCO — A 33-year-old Naples woman was seriously injured Tuesday morning in a crash on Route 11, just south of Webbs Mills Road in Casco.

Sabrina Cloutier was transported to Maine Medical Center in Portland with what were considered “life-threatening” injuries, according to the Cumberland County Sheriff’s Department.

Cloutier was a passenger in a 2011 Chevrolet pickup truck, operated by Shawn Trottier, 39, of Naples. Trottier was also transported to Maine Medical Center with possible broken bones. His injuries, according to police, were not considered life threatening.

According to police, Trottier was traveling southbound on Poland Spring Road at 8:14 a.m. when he lost control of the truck due to icy, wet road conditions. The truck spun into the oncoming lane. Trottier’s truck was struck on the passenger door by a 2008 Freightliner box truck, owned by Kris-Way Truck Leasing Inc. of South Portland. The box truck was operated by Max Walton, 46, of Livermore Falls. Walton was transported to Bridgton Hospital with what were considered minor injuries.

Both Trottier and Cloutier had to be extricated from the truck by fire personnel. All three people involved were wearing seatbelts.

The cause of the crash is still under investigation by the Cumberland County Reconstruction Team, assisted by officers of the Windham Police Department.

Poland Spring Road was closed to through traffic between Webbs Mills Road (Route 85) and Meadow Road (Route 121).