two further sections were identified and funded for upgrade following the 2013 australian federal election. the first of these was the darlington upgrade addressing the section from the northern end of the southern expressway to provide a free-flowing route under the intersections with flinders drive and sturt road to the ayliffes road intersection. the torrens road to river torrens lowered motorway addressed the major intersections with grange and port roads, the outer harbor railway line crossing, and several minor road intersections. both of these upgrades involved land acquisition to widen the road corridor, surface grade carriage ways on the edges, and a lowered central roadway carrying the free-flow traffic below the crossing routes. the torrens to torrens project was started in 2015, and opened to traffic in 2018. the scope of both sections was extended northwards. the initial plan for torrens to torrens did not include grade separation at torrens road which was later added. the initial plan for darlington did not include grade separation at ayliffes road or tonsley boulevard. the darlington upgrade is scheduled for completion n mid-2020.