Work will create a public transport interchange hub and multi-storey car park to enhance services and accessibility for arriving or departing passengers.
Enabling works started in May to divert services and work has now begun to construct a new access ramp to the existing remaining car parks.
Dave Lees, CEO, Bristol Airport, said: “This project is transformational for our customers. It is the largest single capital investment project since the terminal opened in 2000 and will take 18 months to complete.
“As with all large-scale projects, they are complex and the development work will need to be phased to accommodate the normal day to day Airport operations.”
Simon Dunn, Pre-Construction Director, Griffiths Farrans JV, said: “Griffiths and Farrans have worked in partnership with Bristol Airport and fellow CRH business Tarmac to deliver the optimum solution for the Airport, with a keen focus on sustainability.
“Over 100,000 tonnes of excavated material will be processed into suitable material for use in the project. All asphalt materials removed from the existing car park will also be processed for re-use within the asphalt material that will be provided for the perimeter roads.
“This project is a great example of what can be achieved when both client and contractor work in an open and collaborative way, something that has been instilled in the project team from day one.”
Glenn Gilmore, Regional Director, Griffiths Farrans JV, said: “We are looking forward to getting started with this exciting project which will play a significant role in the step change of Bristol Airport as it elevates its offering to support new air links and increase inbound tourism.
“Throughout this project we will be engaging on a calendar of social value activities which will maximise our use of local supply chain, create apprenticeships and employment opportunities as well as engage with colleges, schools and the voluntary and community sector to leave a positive lasting legacy in the area.”