News Overtaking lane work in the pipeline 02/06/2022 FacebookTwitterEmail The Department of Infrastructure and Transport map showing proposed upgrades for the Princes Highway in the Mount Gambier and Millicent areas as part of a $190m Federal and State Government commitment to the Princes Highway in South Australia. MOTORISTS travelling between Millicent and Mount Gambier on the Princes Highway will be pleased to hear that plans are afoot […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password