A 90-year-old Brunswick woman is in serious condition after her van hit a tree and rolled over on Mere Point Road in Brunswick Thursday afternoon. Brunswick Police Department photo

A 90-year-old woman was in serious condition at Maine Medical Center in Portland after her van rolled over on Mere Point Road in Brunswick Thursday.

Police officers found the Honda van upside down near 288 Mere Point Road shortly before 2 p.m. Firefighters freed the driver, Eleanore Berry of Brunswick.

Berry was driving south on Mere Point Road and drifted over the center line into the left side ditch and hit a tree, according to police. The vehicle rolled over and stopped in the northbound travel lane. Police believe Berry fell asleep while driving. She was wearing a seat belt.

Berry was initially taken to Mid Coast Hospital in Brunswick with minor injuries but was later transferred to Maine Med when her condition worsened, a hospital spokesperson confirmed.

Mere Point Road was closed to traffic for about an hour following the crash.