South of the River Thames, the ECR (A102) skirts Tunnel Avenue and flies over Blackwall Lane (A2203) and Woolwich Road (A206) before climbing the hill towards the Sun-in-the-Sands interchange where it passes under Shooters Hill Road (A2/A207) and becomes the Rochester Way Relief Road (A2). It squeezes through the tight space between Rochester Way (the old A2 route) and Woolacombe Road before it ends at the Kidbrooke interchange where it connects to Kidbrooke Park Road (A2213) or continues as the later section of the Rochester Way Relief Road built in the 1980s.