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N2 CARRICKMACROSS BY-PASS

The 9km new single carriageway bypass of Carrickmacross takes 20 minutes off journeys between the Border and Dublin.

PROJECT DESCRIPTION

The Scheme forms part of the N2 Dublin – Derry Route and provides 9km of newly constructed National Primary Road from south of Carrickmacross at Aclint to the north side of the town at Cloughvalley Lower. Carrickmacross is a prosperous market town, with a population of 4,500.

The scheme comprises 9km of single carriageway road with two compact grade separated junctions; the construction of seven bridges; two reinforced concrete culverts; and the realignment of six local and regional roads was required. Two new local roads are also provided to link the By-pass to the existing road network. Public lighting is provided at the junctions, existing services have been diverted and ducts for future use have been provided along the full length of the By-pass.

PROJECT COMPLEXITIES

The scheme involved the construction of embankments up to 8-10 m high over soft ground, cut sections up to 20 m deep through drumlins, and 10 structures including bridges and reinforced concrete box culverts. Construction of road through southern bog (Peppers Bog) included sheet piling along the existing roadway to preserve traffic flow during construction and excavation of peat 5.0m deep, placing of FDM and rock fill.

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