 The single westward extension of the motorway came about in 2002 as the A3 motorway was extended from Jankomir westward to the Bregana border crossing into Slovenia.The eastward advance of the A3 motorway continued in 2002, as it was extended by to Županja, while the easternmost section between Županja and the Bajakovo border crossing into Serbia was opened in 2006, thus completing the six-lane A3 motorway.The D4 state road was thus entirely replaced by the A3 motorway.