Parts of the island are sometimes subject to flooding when the Severn rises.
[3] In February 2014, Royal Marines and Army personnel were deployed to Alney Island to respond to severe flooding.
[4] Telford's historic Over Bridge links Alney to Over across the West Channel, and is now pedestrian use only.
The A40 and A417 trunk roads cross the West Channel on modern road bridges onto Alney before crossing the East Channel to join Gloucester at the end of Westgate Street.
Alney is also crossed by the original South Wales Railway between Gloucester and Cardiff Central.