Three Sabattus teens have been charged more than a year after police say they threw a large chunk of ice off a turnpike overpass, seriously injuring a driver.

The boys, ages 16 and 17, were charged this week with aggravated assault with a dangerous weapon, said Steve McCausland, spokesman for the Maine State Police.

Police say the boys were on the Webster Street overpass in Lewiston in January, 2009, as Robert Deschaine, also of Sabattus, was driving on the turnpike below.

The teens allegedly threw a beach ball-sized block of ice off the bridge. The ice crashed through the windshield of Deschaine’s truck and struck the driver in the face, McCausland said.

Deschaine’s brother, who was in the passenger’s seat and also was hurt in the incident, grabbed the steering wheel and was able to maneuver the truck into the breakdown lane, McCausland said.

Robert suffered serious facial injuries, McCausland said.

State and Sabattus police have continued to investigate. New information came to light in the past few weeks that led to the arrest of the three teens, McCausland said.