The Smart motorway upgrades enable the hard shoulder to be used permanently as an extra running lane improving the reliability of journey times. The works included the installation of new infrastructure and technology including motorway spanning gantries, a contiguous piled retaining wall installed by Balfour Beatty Ground Engineering, refuge areas, emergency telephones, overhead signals, verge mounted signs and CCTV cameras.
The final section of roadworks was completed fourteen weeks ahead of schedule following the earlier completion of Junctions 23 to 25 in Hertfordshire, and Junctions 5 to 7 between Kent and Surrey - which also opened twenty-two weeks ahead of schedule in the spring of 2014.
The early completion was achieved through the extensive use of Building Information Modelling (BIM), which enabled the early detection of design issues while at the same time providing the customer, the Highways Agency, and stakeholders, such as Network Rail, with real-time information on design and implementation.
Balfour Beatty continue to work in a joint venture with Skanska on the motorway at Junction 30 to improve capacity and traffic flow.
Today, Balfour Beatty works alongside Atkins and Egis to operate and maintain the whole M25 under the ConnectPlus brand. As part of the consortium’s maintenance of the M25, a custom-designed, vehicle-mounted vacuum litter picker was developed by our in-house team. The new machine is more efficient and helps to keep our workforce safe by removing the need for litter picking by hand.