A plan to link north and south Wales through a better transport infrastructure has been announced.
Deputy First Minister Ieuan Wyn Jones said the new transport system, designed to connect all regions of Wales, would be "fit for the 21st century".
The proposals by the Welsh Assembly Government aim to improve road and rail links.
The first phase of the plans to improve the road system will begin with 10 sections of trunk road, eight of which link the north and south.
This part of the plan will cost £156 million and will see bypasses built on parts of the A470, A487, A483 and A40 that currently dissect communities.
Work, which is expected to start in April 2011, will also include widening and straightening sections of road.
The north-south improvements, and the completion of work on the Heads of the Valleys road in south Wales, are expected to be completed by 2020.
Mr Jones said: "My aim is to provide better links between strategic centres of population, improving the distribution of economic development opportunities."
The proposals set out for the railway network include improvements to the service between Wrexham and Chester and Gowerton to Lougher.
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