The official definition of the R804 from the Roads Act, 1993 (Classification of Regional Roads) Order, 2012[1] states:
R804: Granby Row - Cork Street, Dublin
Between its junction with R132 at Granby Row and its junction with R110 at Cork Street via Dorset Street Upper, Bolton Street, King Street North, Queen Street, Liam Mellowes Bridge, Bridgefoot Street, Thomas Court and Marrowbone Lane all in the city of Dublin.
