Er mwyn sicrhau bod manteision y prosiect yn cael eu gweld cyn gynted â phosibl, mae tîm y prosiect yn edrych ar yr opsiwn o gwblhau hanner dwyreiniol y prosiect erbyn mis Hydref 2018. Yna, eir ati i gwblhau'r adran dechnegol heriol yng Nghwm Clydach ac ardal Bryn-mawr yn yr amser sy'n weddill.
In order to ensure that the benefits of the project are delivered as soon as possible, the project team is pursuing an option to fully complete the eastern half of the project by October 2018, with the outstanding more technically challenging section covering the Clydach Gorge and the Brynmawr area being completed over the remaining period.