The bypass is divided into three sections in the total length of 16.5 km, with Lot 1 representing the first section. Three viaducts, two bridges, two tunnels and one junction were constructed as well as a 5.7 km long motorway route, connecting villages Jošanica and Butila. The Butila junction - the most impressive structure on the route - is designed as a three-grade separated crossing of four ramps and two structures, bridging the Bosna River and urban roads.