Because the narrow gauge lines of started out as isolated lines from independent ports at Port Wakefield, Port Pirie, Port Augusta, Port Lincoln, Port Broughton, Beachport, Kingston SE and Wallaroo, and a private tramway from Whyalla, the problems of the nascent break of gauge was not immediately apparent. When the broad and narrow systems finally met at Hamley Bridge, Terowie, Wolseley and Mount Gambier endless complaints started. There may have been even more breaks of gauge, as the original bridge at Murray Bridge was designed for narrow gauge.