Mount Lindesay Highway is an Australian national highway located in Queensland. The highway runs southwest from Brisbane, where it leaves Ipswich Road in the suburb of Moorooka (as Beaudesert Road to the Logan Motorway), to the Queensland – New South Wales border and is in length. For most of its length it is roughly aligned with the Sydney–Brisbane rail corridor. At its southern end these transport routes take different passes over the Scenic Rim into the Northern Rivers region. It is designated National Route 13. Route Mount Lindesay Highway commences at the intersection with Ipswich Road in Moorooka and heads in a southerly direction sign-posted as Beaudesert Road, through Brisbane's southern suburban fringes, where it then crosses Logan Motorway. It continues south sign-posted as Mount Lindesay Highway through Jimboomba and Beaudesert, and onwards through the Scenic Rim region through Rathdowney, where the northern end of Lions Road tourist drive begins. South of Rathdowney the highway becomes very winding as it climbs the McPherson Range passing Mount Chinghee National Park, Mount Barney National Park and Border Ranges National Park on the way. The highway officially ends at the state border with New South Wales, where it continues south eventually to Casino and Grafton as Summerland Way. History Until the 1950s, the highway formed part of the main traffic route between Brisbane and Sydney. The coastal route (now the Pacific Highway) was not favoured due to the large number of ferry crossings of the wide coastal rivers, the frequency and severity of flooding of these rivers and the consequent poor state of much of the road for extended periods, and its steep, winding nature as it crossed the intermediate hills between each river valley. The passing of the Main Roads Act of 1924 through the Parliament of New South Wales provided for the declaration of Main Roads, roads partially funded by the State government through the Main Roads Board (later the Department of Main Roads, and eventually Transport for NSW). Great Northern Highway was declared (as Main Road No. 9) on 8 August 1928, running from North Sydney via Hornsby, Peat's Ferry, Gosford, Swansea, Newcastle, Maitland, Singleton, Tamworth, Armidale, Glen Innes, Tenterfield and Woodenbong to the border with Queensland; with the passing of the Main Roads (Amendment) Act of 1929 to provide for additional declarations of State Highways and Trunk Roads, this was amended to State Highway 9 on 8 April 1929.