N17 / N18 Gort to Tuam PPP Scheme, Galway


    National Roads

    The N17 N18 Gort to Tuam Public Private Partnership Scheme forms part of the Atlantic corridor. It runs from Gort in the south to Tuam in the North of Co. Galway with a major junction with the N6 Galway to Dublin Route west of Athenry. The project involved the design and construction of 53.2km of motorway standard dual carriageway between Gort and Tuam, and four-km of Type 2 Dual Carriageway to bypass the town of Tuam connecting to the existing N17 north of Tuam.

    We were appointed to provide services for the Tender Design, Detail Design and Site Supervision of the Works. For the purpose of construction, the scheme was divided into three sections, split geographically. We were solely responsible for the design and supervision of the Northern half of the scheme, which consisted of approximately 24km of motorway standard dual carriageway and 4km of Type 2 Dual Carriageway for the Tuam Bypass.

    The detail design included the following principal features: One Rail Bridge, three River Bridges, Two footbridges, 13 road over and under bridges, 36 other structures including accommodation underpasses and culverts; Steepened Embankment Design; Major Rock Cutting Designs; and sustainable drainage systems – filter drainage, grassed surface water channels, attenuation facilitates, pollution control facilities.

    We designed major junctions at Annagh Hill, Ballygaddy Road and Kilmore; Road restraint systems and various fencing, drainage, communications, landscaping, signage, gantries, lighting and environmental works.

    We prepared a Karst Features Protocol which allowed us to develop a system for identifying karst features on site.

    Client: Direct Route (Tuam) Limited for Transport Infrastructure Ireland
    Location: Co. Galway
    Value: €550 Million

    We completed this project in partnership with Arup.