In Saint-Eustache Between R-148 (Arthur-Sauvé Blvd.) and A-13 In both directions Contraflow traffic: - from 8 pm Saturday to 7 am Sunday - from 9 pm Sunday to 4 am Monday Other closures: - Exit 14 (25th Ave.) of the A-640 WEST. Detour: take exit 11 (R-148, Arthur-Sauvé Blvd. South), turn around on Arthur-Sauvé Blvd., A-640 East and exit 14. - 25th Avenue entrance for the A-640 WEST. Detour (South): A-640 EAST, ramp for A-13 SOUTH, turnaround at exit 20 (R-344, Grande-Côte road), A-13 NORTH and A-640 WEST. Detour (north): 25th Avenue, Dubois Street (West), Arthur-Sauvé Blvd. (south).