Share Houston is still covered by a blanket of ice left behind by a sudden winter storm.The dangerous driving conditions are impacting flights into and out of local airports.Bush Intercontinental and Hobby are both open, but the icy roadways are proving a difficult challenge for travelers trying to get to the airports.At IAH, bridges were treated and are being monitored. The fly-over bridge from westbound Will Clayton Boulevard to southbound John F. Kennedy Boulevard is closed due to icing.The upper ramps for Terminal A, Terminal C and Terminal E — plus rooftop parking in all terminal garages — are closed.At Hobby, the upper traffic ramp for departing passengers is closed. Both arriving and departing traffic is being routed to the lower ramp. All fly-over routes are closed.As of 6 a.m., roads around both airports were passable, but some traffic was being rerouted, according to the Houston Airport System’s Fly2Houston.com website. “The Houston Airports advises all passengers to contact their carrier for more detailed flight information and confirm their flight status before coming to the airport,” Fly2Houston.com’s advisory states.