Clonburris Joint Infrastructure Works

DBFL were originally appointed by Clonburris Infrastructure Ltd in 2019 to develop the principles of the Clonburris Strategic Development Zone Planning Scheme into preliminary designs for the proposed trunk infrastructure to serve the future SDZ development of approximately 10,000 homes on a land bank of 280 hectares in west Dublin. DBFL have played a lead role in the securing of planning permission, preparation of the detailed design, public procurement and appointment of a civil engineering contractor for the delivery of the Clonburris Southern Link Street and associated trunk infrastructure. DBFL are currently providing resident engineering and contract administration services for the construction stage.

DBFL’s multidisciplinary design team developed the preliminary design of the infrastructure which included approximately 8km of link streets, 15 no. signalised Junctions, 6 no. bridge structures, 3 no. wastewater pumping stations, strategic attenuation facilities, 3 no. strategic parks, trunk drainage, trunk watermains and utilities to serve the 280 hectare development lands. The Clonburris Southern Link Street includes the trunk infrastructure to serve the southern portion of the SDZ. DBFL’s detailed design included all civil, transportation and structural engineering services.

DBFL developed the street network and junction designs in accordance with NTA Guidance, the National Cycle Manual and the Design Manual for Urban Roads and Streets (DMURS). The street network design provides segregated cycle facilities and enhanced bus services along the link street to encourage the use of sustainable transport modes for the future residents of Clonburris.

A significant challenge to the delivery of the infrastructure was balancing the needs of all stakeholders to provide coordinated and coherent infrastructure for the development of greater than 10,000 homes under the control of five separate landowners. Significant consultation was undertaken with Irish Water, the landowners (developers), South Dublin County Council, Utility Providers, The National Transport Authority, Irish Rail, Inland Fisheries Ireland and the OPW to develop the design to achieve the optimal outcomes for all stakeholders.

In order to avoid excessive haulage of material from site, and subsequent importing of granular fill, DBFL collaborated with the appointed contractor to treat and reuse excavated material from the site for construction of embankments. This also provided a saving to our client in reduced construction costs.