An 89-year-old man died Monday after his car crashed into a paving roller in a construction zone near the Gray exit of the Maine Turnpike.

Henry P. Roy of Lewiston was pronounced dead at Central Maine Medical Center in Lewiston, said Stephen McCausland, spokesman for the Maine Department of Public Safety.

McCausland said that determining the cause of the crash may be impossible.

Roy was traveling north on the turnpike in a construction zone where travel was reduced to one lane. His 2006 Mercury Marquis struck a construction barrel before hitting the paving roller.

The operator of the roller, 49-year-old Blaine Bradeen of Livermore, suffered leg injuries and was also taken to CMMC. His injuries are not considered life-threatening.

The crash temporarily shut down northbound travel on the roadway. The accident was cleared about 11 a.m., but traffic backed up about 10 miles to Exit 53 near the Falmouth spur for several hours, McCausland said.