Balfour Beatty subsidiary Birse has won a £7 million contract for maintenance and improvement work on the Windsor and Eton relief road.
The project, which also includes work on the Eton/Slough spur road, is funded by central government following a successful bid by the client Royal Borough of Windsor and Maidenhead.
Work to be carried out includes renovating and upgrading bridges, waterproofing, resurfacing, erecting safer barriers and extensive planting of trees to improve the look of the main gateway to Windsor.
The scheme will also update the lighting, signage and landscaping along the road, which runs from junction 6 of the M4 to the Clarence Road roundabout. One of the main aims of the scheme is to reduce noise levels for residents who live near the road.
Work on the improvements will begin this spring and is scheduled to finish by May 2011, in time for the 2012 Olympics when the relief road will be a key transport link to the rowing events at Dorney Rowing Lake.
All lanes of the dual carriageway will remain open during office hours and weekends and at least one in either direction at other times.