Costain has been appointed by Transport for London (TfL) to provide detailed design and construction services for the second phase of improvements to the A40, a major east-west road in London. The upgrades aim to enhance the safety and quality of customer journeys on this section of the road, which sees 96,000 vehicles per day. The project will involve the replacement of six cantilever expansion joints, measures to protect parapets in high-risk locations, and resurfacing and concrete repairs on a two-kilometer stretch of road. The works are expected to be completed by summer 2025 and will prioritize minimizing inconvenience to road users.