The story
The National Roads Authority (NRA) was established in 1994 to provide central management for Ireland's national road network, while the Railway Procurement Agency (RPA) was founded in 2001 to arrange for new light rail and metro projects. The RPA was merged into the NRA under the Roads Act of 2015, and the body was operationally named, and publicly rebranded, as Transport Infrastructure Ireland.
From Wikipedia’s article on Railway Procurement Agency, shared under CC BY-SA 4.0.3