An additional exit was built at Monarto around 1999 to service an expanding commercial zone and Monarto Zoo in the area. Another exit was announced in 2014 at Bald Hills Road 4 km southeast of the Mount Barker interchange to service growing housing estates in southern Mount Barker and Nairne. The contract was announced on 1 April 2015 that Bardavcol would commence construction in May 2015, with the interchange including entry and exit ramps in both directions. The $27M project was funded $16M by the Australian government, $8M from South Australia and $3M from Mount Barker district council. The new interchange opened on 15 August 2016.