Highways England has confirmed the revamp of junction 28 of the M25 in Essex. But, John Graham Construction’s contract has been agreed by Highways England, at a price of £124m which is higher than usual.
Highways England had been working on the basis that the whole project would cost less than £100m, including all the professional fees and land acquisition costs as well as the main construction works.
So, it has been clear that the £124m contract suggests that costs have escalated by somewhere between 25% and 50%. The project will enable road traffic to flow directly between the M25 and the A12 without having to give way at a roundabout and traffic lights.
Construction work is scheduled to start by spring 2022, subject to planning, while early design works started in winter 2020. The scheme is located between Brentwood and Romford, on the border of London Borough of Havering and Brentwood Borough Council.
The traffic connecting from the M25 to the A12 will be built on a two-lane loop road with a hard shoulder by Graham. It will build an overbridge at the A12 eastbound exit road to allow the proposed loop road to join the A12 eastbound carriageway.
However, the anti-clockwise carriageway will be widened to provide the proposed exit road. The new lop road will be facilitated with a bridge over the M25 anti-clockwise entry road. This is one of three projects that Highways England allocated to Graham back in 2018.