1977
| Route | Open | Junctions | Section | ||
|---|---|---|---|---|---|
| 1 | M90 | Mar 1977 | J8-8* | Arlary → Arngask | |
| 2 | M11 | Apr 1977 | J4-7 | Redbridge → Harlow | |
| 3 | M25 and A282 | Apr 1977 | J2-3 | Dartford → Swanley | |
| 4 | M4 | Apr 1977 | J46-49 | Pontardulais Bypass | |
| 5 | M20 | May 1977 | J1-2 | Swanley → West Kingsdown | |
| 6 | M5 | May 1977 | J30-31 | Exminster section | |
| 7 | M1 | Jul 1977 | J1-2 | Brent Cross → Page Street | |
| 8 | M18 | Jul 1977 | J4-5* | Armthorpe → Hatfield | |
| 9 | M69 | Jul 1977 | J0-2 | Coventry section | |
| 10 | M180 | Sep 1977 | J4-5 | Brigg Bypass | |
| 11 | M4 | Oct 1977 | J28-29 | Tredegar Park → Castleton | |
| 12 | M77 | Oct 1977 | J0-1 | M8 → Dumbreck Road | |
| 13 | M8 | Oct 1977 | J20-26 | Renfrew Motorway | |
| 14 | M4 | Nov 1977 | J37*-39 | Pyle Bypass | |
| 15 | M4 | Dec 1977 | J32-35 | Coryton → Pencoed | |
| 16 | M90 | Dec 1977 | J9-10 | Muirmont → Craigend | |
| 17 | M58 | 1977 | J4-6 | A506 Regional Road upgraded to motorway |
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