The works comprise a four-floor structured steel extension to the current two-level car park that will more than double the capacity of the car park to 2,386 spaces.
Balfour Beatty will create the structure of the car park from steel, rather than more traditional pre-cast concrete, helping to reduce its weight and cost.
The new car park development has been designed to complement the existing car park facilities at the airport, which will remain open during the construction process.
Airport operator, daa, expects work on the project to be completed in December 2015.
Alan Garvin, Balfour Beatty’s managing director for Ireland, said: “We have a long relationship with daa having successfully completed a number of projects for them since 2006 and we look forward to continuing this relationship.
“We shall be using Building Information Modelling (BIM) to provide a seamless interface between M&E, structural and civil design and to predict traffic flows enabling us to handover the car park efficiently for use.”