Cafodd proses Ymwneud Cynnar gan Gontractwr ei ddewis ar gyfer y prosiect hwn.  Mae arfer gorau o fewn y diwydiant ar gyfer prosiectau seilwaith mawr ar briffyrdd dros y 15 mlynedd a mwy diwethaf wedi cynnwys y defnydd o’r broses Ymwneud Cynnar gan Gontractwr ar gyfer proses gaffael y dylunio a’r adeiladu.  Mae’r math hwn o gaffael yn cael ei ddefnyddio’n eang yn y DU a dyma’r dull caffael a ffefrir gan Is-adran Trafnidiaeth Llywodraeth Cymru ar gyfer prosiectau seilwaith mawr, cymhleth.  Mae wedi’i weithredu’n llwyddiannus ar nifer o wahanol brosiectau cefnffyrdd cymhleth a gyflawnwyd yng Nghymru yn ddiweddar.
Early Contractor Involvement was selected for this project. Industry-standard best-practice for large highway infrastructure projects over the last 15+ years has included the use of the Early Contractor Involvement (ECI) design and build form of procurement. This form of procurement is used extensively in the UK and has been Welsh Government Transport Division’s preferred procurement route for large, complex infrastructure projects. It has been implemented successfully on a number of major trunk road projects delivered in Wales in recent years.