Work to replace the steel central reservation barrier with a safer concrete barrier on a 8.3km stretch between M5 J15 (Almondsbury) and J17 (Cribbs Causeway) has been completed in time for the Easter holiday.
http://nds.coi.gov.uk//content/detail.aspx?NewsAreaId=2&ReleaseID=412939&SubjectId=2
seen at 13:37, 1 April in Independent Chief Inspector of the UK Border Agency News - national.