Region: North West
The Mid-Wirral Motorway M53 and A55 Extension to the Welsh Border
Statistics and options
| Section | Construction started | Opened to traffic |
| Mersey tunnel to Hooton (J1 to J5) | July 1969 | February 1972 |
| (M531) Hooton to Ellesmere Port (J5 to J8) designated as motorway | N/A | October 1974 |
| (M531) Ellesmere Port to A5117 (J8 to J10) | ? | |
| A5117 to M56 (J10 to J11) | ? | March 1981 |
| Stoak to Chester (J11 to J12) | June 1980 | July 1982 |
| A55 Improvement at Chester | October 1989 | June 1991 |
| A55 Chester Southerly By-pass | ? | December 1976 |
Note: County Motorway M531 became part of Trunk Motorway M53 in March 1981