So far expenditure of £452 million on the project has been tracked and 85% of that expenditure has been re-invested in Wales.
Hyd yma, mae gwerth £452 miliwn o wariant ar y prosiect wedi cael ei olrhain, ac mae 85% o'r gwariant hwnnw wedi cael ei ail-fuddsoddi yng Nghymru.