 2.2 miles after it starts, the dual carriageway narrows and reverts to standard single carriageway, through Creagh and onto the Castledawson Bypass and crosses the Moyola River.This second stretch, from the end of the Toome Bypass to Castledawson, is also due to be upgraded to dual carriageway with grade-separated junctions by 2021 as far as the Castledawson roundabout (which will be retained), where traffic for Magherafelt and Cookstown veers off the A6 southwards along the A31.After Castledawson the A6 goes over generally flat agricultural land near the hamlet of Curran and the village of Knockcloghrim and crosses the Moyola River for a second time.