Route Open Junctions Section
1 M6 Apr 1960 J33-35 Lancaster Bypass Part is now A601(M)
2 M60 Mar 1960 J7-13 Stretford and Eccles Bypass Formerly M62; later M63.
3 M50, A40 and A449 Nov 1960 J1-4 Brokeridge Common → Ross on Wye
4 M20 Dec 1960 J5-7 Maidstone Bypass West Opened as A20(M)