RPS broke new ground in pioneering BIM technologies on this project, the first largescale implementation of Level 2 BIM on a major infrastructural project in Ireland or the UK.
Raith Interchange is one of the busiest strategic connecting junctions within central Scotland's motorway network. The RPS design team faced a unique engineering challenge at Raith – developing a new elevated free flow rotary above the existing roundabout and the construction of an underpass beneath it, all in a flood plain adjacent to an area of environmental sensitivity, massive artesian pressures and variable ground conditions. The interchange remained live to traffic during construction and within a very confined footprint.
RPS produced a fully co-ordinated and federated BIM model of the alignment, structures, drainage, utilities, temporary works, signage, road markings and lighting. We significantly increased efficiency and productivity on the project through the innovative use of BIM for traffic management, clash avoidance and value engineering. We could extract from the BIM model all information required to maximise the integration of temporary road alignments and pavements into temporary design solutions, minimising work quantity and traffic disruption.
Detailed visualisations of temporary traffic management in 3D and 4D were indispensable as an engagement tool, in that they allowed for understanding in real time of the design proposals, facilitating greater collaboration and better outcomes with local authorities and other stakeholders.
Testament to the extent of innovation, the project has been selected as an Exemplar for the definition of the Scottish BIM Mandate; it received the judges’ special commendation at the inaugural Irish BIM Innovation Awards held in November 2016 and was awarded the ACEI Excellence Award (Overseas Category) in 2018.