FCC/084/19 - Construction of a new 2-span bridge over N3 adjacent to existing Snugborough Road Bridge

Descriptions

The proposed works include:- Construction of a new 2-span bridge over N3with pile foundation immediately adjacent to existing Snugborough road bridge inclusive of footpath and cycle track.- Construction of a new 2-span pedestrian/cyclist bridge (with potential vehicle loading) with pile foundation to the north of Snugborough road.-Construction of 2 new pedestrian underpass. One underpass is located to the north of existing pedestrian underpass, and another underpass is located 30m south of the re-aligned N3 on-ramp.- Construction of Reinforced Earth Wall-Contractor designed elements to include design of precast concrete underpass structures, reinforced earth walls, and bridge beams.- Modify existing bridge to one-way traffic flow southbound.- Remove and replace existing bridge parapet with class H2 parapet. - 9C main sewer diversion, with peak flows over 1000l/s. Works include construction of approximately 150m of new 1.2m dia new sewer line, constructing new chambers, modification of existing chambers and constructing chamber on existing sewer line. Over-pumping works will be required. - Lane widening of the Snugborough Road northeast and southwest approaches to the interchange.- Lane widening of the L3020, Blanchardstown Main Street (R806) and N3 On-Ramp. - Realign the N3 eastbound on ramp.- Upgrade Waterville roundabout into a signalised junction.- Provision of improved cyclist and pedestrian facilities.- 500mm dia AC watermain diversion- Utilities diversion including BT, Eir, Irish Water, Smart Telecom, Virgin Media, gas distribution main.-Drainage works including construction of detention basin, and underground water attenuation tank.- Provision of public lighting, signage, CCTV road lining and landscaping associated with the above works.