Moving into the unknown? the Severn toll booths disappear are we entering a new era?
The Prince of Wales Bridge will close westbound on the penultimate weekend before Christmas to remove the M4 toll booths as the bridge goes toll free.
The renamed Second Severn Crossing will shut westbound on Friday, 14 December at 20:00 GMT ahead of the Severn tolls being scrapped on Monday, 17 December.
Christmas shoppers and Cardiff fans returning from their Premier League game at Watford will be affected.
Motorists will be diverted around the original M48 Severn Bridge.
The M4 bridge will reopen early on 17 December for a formal ceremony, as it is believed it will be the first time in about 400 years that crossing the Severn estuary will be free.
These will be narrow lanes with a 50mph speed limit.
The M48 crossing between Aust in Gloucestershire and Chepstow will be closed westbound later on 17 December, reopening early on 19 December so the booths on the English side can be taken away.