Highway 400 between Highway 141 and Lake Joseph Road in Seguin Township are closed in both directions.Southbound traffic is being rerouted onto Highway 141. Lake Joseph Road is also available as an alternate route. Visibility in this area is zero to minimum due to the blowing snow. Motorists are advised to stay where they are until the weather clears. It is an offence under the Highway Traffic Act to travel on a closed road. For more information on the road conditions and closures, dial 5-1-1 or visit the Ministry of Transportation of Ontario (MTO) web site at http://www.mto.gov.on.ca/english/traveller/trip/map.shtml?ll=47.848746,-81.805468&z=7 .