A FIRST-of-its-kind box slide has been used to install a 65‑metre, 8,500‑tonne prefabricated concrete underpass beneath the M27 at Junction 10. The motorway is currently closed in both directions between Junctions 9 (Whiteley/Park Gate) and 11 (Fareham) until January 4 as part of a £100 million scheme to link Fareham with the forthcoming Welborne Garden...