The upgrade between Bangalow and St Helena is 4.7 kilometres in length. It commences at the northern end of Bangalow Bypass and follows the line of the existing highway to the southern end of the Ewingsdale Interchange project. The design includes two grade separated interchanges at Possum Creek Road and Fowlers Lane which would cater for traffic movements in all directions. They would provide for local traffic on Possum creek road, Sunnycrest Lane, Fowlers lane and Coolamon Scenic drive. Intersections at St Helena Road and Browns crescent would remain at grade with the highway.