The Parish Council has been notified that Dodington Lane, Old Sodbury, will be subject to a temporary closure over an 18 month period from 19 November 2018. This is for works to lay a water main. The road will not be closed for the whole period, but only for so long as necessary, which is likely to be for six weeks.
You can read the notice from South Gloucestershire Council here and also see the diversion route here.