M4 relief road Newport: Wales 'needs full motorway access'
17 July 2014 Last updated at 09:45 BST
A £1bn relief road for the M4 around Newport has been confirmed by Welsh Transport Minister Edwina Hart.
It is the largest capital investment programme ever announced by the Welsh government.
Supporters say it will improve transport in south Wales, ease congestion and boost jobs.
But opponents have criticised the plan because of its environmental impact and one group has dubbed it a "billion pound mistake."
Keith Jones, director of the Institution of Civil Engineers Wales Cymru, gave evidence to the assembly committee. He told Mai Davies on BBC Radio Wales that he welcomed Mrs Hart's decision.