A major scheme to improve journeys on the A23 between London and Brighton will move into its final phase of construction this month.The A23 is being widened between Handcross and Warninglid to improve journeys and safety on the vital transport link.In July the project will move into its final phase as southbound traffic will be moved onto the newly constructed southbound carriageway using overnight carriageway closures.Highways Agency project manager Chris Bacon said: "Work has progressed well to improve journeys on the A23 in West Sussex and we're now ready to move into the final phase of construction. The project is still on schedule for completion later this year and we have already completed work on several slip roads and built new access roads for local residents."The changes will happen over several nights, and in two phases. We have planned the work to take place overnight, when we know traffic flows are lowest, and have liaised with West Sussex County Council to ensure the A24 is available to minimise disruption."During the works clearly signed diversions will be in place via the A264, A24 and A272.