OPP are closing HWY 400 at Lake Joseph Road northbound and southbound due to poor visibility. Southbound traffic is being rerouted onto Highway 141. Lake Joseph Road is also available as an alternate route. Visibility on the 400 is extremely poor right now and a few minor crashes have occurred both northbound and southbound. Drivers should avoid the area. Listener reports say snowmobiles are being used to help stranded drivers.