Region: North East
A1 Improvement schemes. Wentbridge to Micklefield
Statistics and options.
| Section | Construction started | Opened to traffic |
| Wentbridge to Ferrybridge | ? | 1961 |
| Fly-over at Darrington Cross Roads | ? | 1978 |
| The Ferrybridge By-pass and Aire Bridge | May 1964 | 1967 |
| Brotherton By-pass | 1960 | 1962 |
| Brotherton to Micklefield | July 1962 | November 1964 |
| A1(M) Fairburn to Hook Moor | May 2003 | May 2005 |
| A1(M) Wetherby to Walshford | May 2003 | December 2004 |