 Due to the huge construction costs and widespread public opposition, most of the scheme was cancelled in 1973 and the ECR and the West Cross Route and Westway in west London were the only significant parts to be built.At the northern end of the ECR, the unrealised plans would have seen it connect at Hackney Wick to the unbuilt North Cross Route which would have run west across north London via Dalston, and also to the M11 motorway which was originally planned to continue south from its current starting point at the North Circular Road (A406) in South Woodford) to join Ringway 1.Part of this plan was eventually achieved in a modified form when, in the 1990s the 'A12 Hackney to M11 link road', or 'M11 Link Road' was constructed through Leyton, Leytonstone and Wanstead to connect to the ECR at Hackney Wick.