 New momentum came in 2014 when construction started on last remaining subsections (5.6 km-long Grabovnica – Grdelica, 26.1 km-long Grdelica – Vladičin Han, 26.3 km-long Vladičin Han – Donji Neradovac, 8 km-long Donji Neradovac – Srpska Kuća, and 8 km-long Srpska Kuća – Levosoje) and was in simultaneous construction from until 2019 when it was completed and this last remaining part of A1 motorway was opened to traffic.Motorway passes through valley of South Morava, passes west of Niš, by Merošina and Leskovac, and through very difficult terrain of Grdelica Gorge.On this part of motorway through the Grdelica Gorge there are 33 bridges, of which Vrla bridge is longest (around 650 meters long and around 60 high), and two tunnels