An RCMP cruiser is seen in this file photo.

A 56-year-old man is dead after a single-vehicle crash on a northern Alberta highway Saturday afternoon.

Mounties say the man was driving east on Township Road 680 and Range Road 170 just after 6:15 p.m. when he hit a ditch with water.

He was pronounced dead on scene, police said.

The man's name will not be released. He was from Colinton, Alta.

The crash is under investigation.