The Atlantic Corridor, when combined with the inter-urban motorways linking Dublin and the other cities, is intended to ring the island of Ireland and to connect primary population centres.[citation needed]
As of 2018, over 100 km (62 mi) of the route was completed motorway or dual carriageway.[citation needed] At that time, the next construction planned was the M20 from Cork to Limerick, which was allocated €850 million in government funds under the National Development Plan 2018-2027 capital scheme. The M20, which was "progressed through planning and design phases" as of 2010,[4] is proposed to link with the planned Cork northern ring road, also forming part of the Atlantic Corridor route, connecting the planned Cork to Limerick motorway with the partially completed Cork-Waterford N25 dual carriageway.[citation needed]
^"Need for N20 Cork-Limerick road upgrade identified in 1998". irishtimes.com. Irish Times. 30 March 2022. Retrieved 6 June 2022. The N/M20 Cork to Limerick Motorway Scheme, which was to form part of the government's Atlantic Corridor strategy to link Letterkenny to Waterford, was progressed through planning and design phases and the scheme was submitted to An Bord Pleanála in 2010