Premier Maurice Duplessis opens Chaudière Bridge and new lane on Quebec Bridge: various shots of Chaudière Bridge. Shots of Premier Maurice Duplessis and party assisting at benediction of bridge, of Duplessis cutting ribbon. LSs of Quebec Bridge and CS of commemorative plaque on Quebec Bridge. Shots of opening ceremony at Quebec Bridge, benediction of bridge, Duplessis cutting ribbon. HAMLSs of motorcade driving on Quebec Bridge.