The design and construction of the Dublin Port tunnel national road project is a matter for the National Roads Authority, NRA, in co-operation with relevant local authority.
The national development plan sets out a strategic framework for the development of national roads and provides for investment of €6.75 billion in national road improvements over the period 2000-2006, including the N1 Dublin Port tunnel.
Under the Roads Act 1993, the NRA has overall responsibility for the planning and supervision of works for the construction and maintenance of national roads. It is a matter for the NRA, within the NDP framework, to promote the detailed programming of the work required and to manage, in co-operation with local authorities, the planning, design and implementation of individual road development projects.