 Bypassing the Brisbane central business district, it connects Brisbane’s Pacific Motorway and Go Between Bridge at Hale Street to Kingsford Smith Drive, Legacy Way Tunnel, Clem Jones Tunnel, AirportLink Tunnel and Lutwyche Road following the Exhibition railway line for the majority of its length.The route is marked as the M3 from the western part of the route, to the Horace Street interchange.The motorway cost $220m to complete and incorporates a total of six lanes, four tunnels, 18 bridges and was the largest infrastructure engineering project undertaken in Queensland for decades.