The plan was currently in the final stages of design, and would go to the Minister for formal sign-off in the first week of June.
Roedd y cynllun yng nghamau olaf y gwaith dylunio ar hyn o bryd, a byddai’n mynd at y Gweinidog i gael ei gymeradwyo'n ffurfiol yn ystod wythnos gyntaf mis Mehefin.