Mae'r gwaith wedi'i raglennu i gymryd 11 wythnos gan ddibynnu ar y tywydd a bwriedir ei gwblhau erbyn 27 Tachwedd, ond bydd pob ymdrech yn cael ei gwneud i orffen cyn hynny os bydd hynny’n bosibl.
The works are programmed to take 11 weeks depending on weather conditions and are scheduled to be completed by 27 November, but every effort will be made to finish ahead of schedule if that is possible.