N5 Westport to Turlough Road Project, Co. Mayo, Ireland

The N5 Westport to Turlough Road Project links the N5 at Castlebar to the N59 in the townland of Conrea Junction, forming a bypass to the east and south of Castlebar and a bypass to the north of Westport.

The scheme comprises of design and construction of 19.7km of Type 2 Dual Carriageway and 5.8km of Type 3, 2 and 1 Single Carriageway and passes over the Westport to Manulla Junction railway line at two locations.

There was over 3.7Mm³ of excavation of which 1.2Mm³ was soft/unacceptable materials and over 400km³ was hard rock, the majority of which had to be blasted. There was over 2.5Mm³ of fill required on the scheme. The location of the suitable materials were mainly all at one end of the scheme so significant long on-site haulage was required with temporary crossings points established.

The scheme also includes 2 grade separated junctions, 18 watercourse realignments /diversions and 53 culverts. There are 27 principal structures included within the scope of the works.