1972
| Route | Open | Junctions | Section | ||
|---|---|---|---|---|---|
| 1 | A627(M) | Jan 1972 | Entire motorway | ||
| 2 | M56 | Jan 1972 | J1-7 | Wythenshawe → Bowden | |
| 3 | M53 | Feb 1972 | J1-5 | Mersey Tunnel → Hooton | |
| 4 | M57 and A5300 | Apr 1972 | J4-7 | Liverpool Outer Ring Road phase 1 | |
| 5 | M73 | Apr 1972 | Entire motorway | ||
| 6 | A38(M) | May 1972 | Entire motorway | ||
| 7 | M6 | May 1972 | J6-7 | Gravelly Hill → Great Barr | |
| 8 | M90 | May 1972 | J5-8 | Kinross and Milnathort Bypass | |
| 9 | M18 | Jun 1972 | J5*-6 | Hatfield → Thorne | |
| 10 | M606 | Sep 1972 | J2-3 | A6177 → Cleckheaton Road | |
| 11 | M621 | Dec 1972 | J3-7 | South East Urban Motorway | Opened as part of M1 |
| 12 | M9 | Dec 1972 | J2-4 | Kirkliston → Lathallan | |
| 13 | M4 | 1972 | J44-46 | Morriston Bypass | |
| 14 | M62 | 1972 | J24-26 | Ainley Top → Chain Bar | |
| 15 | M8 | 1972 | J17-18 | Glasgow IRR, Woodside → Charing Cross | |
| 16 | M27 | 1972 | J1-2 | Cadnam → Ower |
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