“We’ll be welcoming our English brethren once again. Crossing the old M48 Severn Bridge by bike is always fun and, atleast for me, is another one of those things about cycling that brings out the inner child. {font-family:"Cambria Math"; There is a footpath leading from the services to allow pedestrians to cross the bridge. Designed by Thomas Penson, built by the Brymbo Company of Wrexham. The motorway rejoins the M4 at Undy, junction 23 to the east of Magor. The completion of this construction project is a major transportation milestone that will reduce congestion for hundreds of thousands of Anne Arundel County residents and visitors who travel over the Severn River Bridge in Annapolis each year. Service recommenced 1926, finally closed 1966. The tunnel is 47.5 m deep, with a diameter of 3.05 m and a total length of 3,678 m. Closed circa 1860. about 1km before turning left (signposted Bulwark),