Stuart Gerrard 23 October 2017 Highways, Pipelines & Sewers M3 J2-4A: Smart Motorway for Balfour Beatty, Highways EN Stuart Gerrard 23 October 2017 Highways, Pipelines & Sewers As part of our £2.8m contract with Balfour Beatty, Davey Civils installed a challenging temporary works scheme, which allowed the construction of an interceptor chamber.