Mermentau man killed in Acadia Parish accident on U.S. 90 Mermentau man killed in Acadia Parish accident on U.S. 90 Acadiana bureau Oct. 13, 2013 Comments Lafayette — A Mermentau man who was not wearing a seat belt was killed Wednesday night when the car he was driving east on U.S. 90 in Acadia Parish ran off the road and hit a tree, State Police said. Christopher Legros, 37, was pronounced dead at the scene by the Acadia Parish Coroner’s Office. A passenger who was wearing a seat belt, Mariah Davis, 19, of Jennings, suffered moderate injuries and was taken to a hospital, Trooper Stephen Hammons said in a news release Thursday. Investigators determined Legros was driving fast when the 2008 Chevrolet passenger car veered off the left side of the highway. The crash occurred on U.S. 90 west of La. 91, according to the release. Hammons said toxicology samples were sent to the State Police Crime Lab to determine if the driver was impaired in the crash, which remains under investigation.