Advertisement 18 April 2013 at 12:26pm Roads: M48, Severn Bridge One lane is closed because of strong winds on the M48 Severn Bridge both ways between J2 A466 (Chepstow) and J1 A403 / B4461 (Aust). The matrix sign is set to 40 mph. Last updated Sun 3 Nov 2013 UK M48 Severn Bridge Share Tweet Plus Reddit