 The M4 is the key artery for the economy of south Wales and without the M4 the economy simply wouldn't be able to grow or prosper. It's absolutely essential for investors to be able to see that Wales is open for business and I think demonstrating that by making sure that the Bringlass tunnels has the investment that it requires is very important. Ar yr eginfedd o'r ffennaf 2006, dechreuwyd y gwaith y ddorod ddynnell i Bringlass yn nôl i safonau europiaid. Byddai cyfnodau ca i hyn yn digwydd am beth arnoson yr ythnos o 8 yr hwyr tan chwech y bwre. Mae hyn yn cynnwys ambeilgefnod byr ar y pen ythnosau. Mae angen gwaith cynnal achadw angen reidiol ar bont avonwysg a thraffond malpas. Ar ôl cwbl heir gwaith byddai tunnel, y bont a'r drafffond yn ôl i'r safon cywyr. We're on track to see completion in spring 2018 but there will be points at which the road works actually cease. So for example during the Six Nations and the Champions League final and other major events. So we're trying to keep disruption to an absolute minimum. This is essential work and it will help the economy and it will help communities in south Wales in the long run.