The official description of the R128 from the Roads Act 1993 (Classification of Regional Roads) Order 2012[1] reads:
R128: Lusk - Rush - Skerries, County Dublin
Between its junction with R127 Rathmore Road at Lusk and its junction with R127 at Balbriggan Street in the town of Skerries via Station Road at Lusk; Whitestown; Main Street and Skerries Road at Rush; Loughshinney Cross; Strand Street and Thomas Hand Street in the town of Skerries all in the county of Fingal.