M4 motorway M4 motorway The M4, a motorway in the United Kingdom running from west London to southwest Wales, was originally referred to as the London-South Wales Motorway. The English section to the Severn Bridge was constructed between 1961 and 1971; the Welsh element was completed in 1993. The Second Severn Crossing officially renamed the Prince of Wales Bridge, was inaugurated on 5 June 1996 by HRH The Prince of Wales and the M4 was rerouted. Apart from its two spursthe A48(M) and the M48the M4 is the only motorway in Wales. From London to Bristol, the M4 runs close to the
M4 Western Motorway M4 Western Motorway The M4 Western Motorway (also known as the M4 Motorway or simply M4) is a dual carriageway motorway in western Sydney, New South Wales, Australia. The partially-tolled motorway stretches from in the east, where it connects with the Great Western Highway/Parramatta Road as the A4 to in west, where it continues as the Great Western Highway as the A32. The M4 Western Motorway was formerly known as F4 Western Freeway. It used to be part of the Sydney Metroad 4 until 2013, when the new M4 route designation was proclaimed along the whole motorway. A toll was