 The A4 continues as a short stretch, called the Dungannon Road, to Junction 12 of the M1 at The Birches.The A4 resumes at the end of the M1 at the junction with the A29 Portrush-Dundalk road.The old road from The Birches through Tamnamore, Killyman to Dunganonn still exists parallel to the M1 motorway, but its sections have all been downgraded to the B34, B131 and a C road.