The Southern Transport Investment Program is a road and rail transport plan for the northern outskirts of Hobart instituted in 2007 by the Tasmanian state government. It outlines most prominently an extensive upgrade of the Midland Highway, including the Brighton Bypass, the Bagdad Bypass and the replacement of the Bridgewater Bridge. The plan also outlines the construction of the Brighton Transport Hub and various rail alignment improvements to the Main North/South Line.

The Midland Highway is one of Tasmania's major inter-city highways, running for 176 kilometres (109 mi) between Hobart and Launceston. It is part of the AusLink National Network and is a vital link for road freight to transport goods to and from the two cities. It represents a major north–south transportation corridor in Tasmania and has the route 1 designation as part of the National Highway. The highway consists of various traffic lane arrangements, the most common being two lanes – one in each direction, with overtaking options and at-grade intersections. At both the Launceston and Hobart sections of the highway there are small portions of grade-separated dual carriageway.