OCSC was appointed by the National Roads Authority and South Tipperary County Council to oversee the planning of the M24 Carrick-on-Suir Bypass. The project involved the planning of a high class dual carriageway between the M24 2+1 route east of Carrick-on-Suir as far as the N76 National Secondary Route north of Kilheffernan Roundabout where it will tie in to the proposed N24 Clonmel Bypass in County Tipperary. It comprised 16.5 kilometres of dual carriageway with 4 kilometres of realigned local roads and 4 kilometres of new link road. A number of significant structures include two river crossings over the Glen and Linguan Rivers. There are also 10 no. road under- and over-bridges along the route. OCSC was appointed to bring the scheme to Land Acquisition Stage. Work was completed on the Project Appraisal, Constraints Study and Route Options Report including the selection of an Emerging Preferred Route. In the course of this work OCSC undertook detailed horizontal and vertical alignment design along with significant ground investigation.
In parallel with the constraints and route selection process, OCSC undertook a major Traffic Modelling Report and Cost Benefit Analysis for the scheme. The modelling was carried out over a 100 kilometre squared area and was undertaken using VISSUM macrosimulation software based on a detailed Origin and Destination Survey work specified by OCSC which was carried out early in the project. The project included extensive consultation with members of the public and affected landowners, Elected Members of South Tipperary County Council and with numerous prescribed bodies under the relevant planning and development regulations.