M7-N80 Clonminham Link Road & Rail Bridge

OCSC were appointed by Laois County Council to undertake the design, contract administration and site supervision of a new relief road to link the N80 National Secondary Route to the R445 Regional Road in the south western sector of the county town of Portlaoise. The route acts as a local bypass for the N80 National Secondary Route which currently runs through the centre of the town causing significant delays and congestion.

The scheme is just under 1 kilometre in length and incorporates a single 30m bridge spanning over the Dublin – Limerick rail line which is one of the busiest rail lines in the country. The carriageway is 7.30m wide with 1.5m wide bituminous cycle path, 1.5m wide concrete footpath, hard and soft margins, associated drainage works, service ducting, safety barriers, boundary fencing, landscaping, service crossings and public lighting. The route incorporates a 40 metre ICD roundabout.

OCSC successfully negotiated a Bridge Agreement on behalf of the client with the Irish Railway Authority Iarnród Éireann. The bridge was designed in order to facilitate minimum disruption to the operations of the railway line and to minimise the amount of possession time required from the rail operator. This was done with the twin objectives of facilitating the ongoing operation of the railway and of minimising costs to the contractor and the client. OCSC provided all civil, structural, environmental and transportation engineering services for the development along with detailed negotiations with local landowners and with the Elected Members of Laois County Council during the course of the project.