A two-year redevelopment scheme ran from early 2008 until late 2010, widening the northern section of the dual carriageway and significantly expanding and improving the motorway junction.

The road from here to Winchester is a scenic mix of single and dual carriageway, that was progressively improved in the late 1960s.

At Kings Worthy, the road diverts onto part of the original Winchester Bypass, constructed in the late 1930s,[8] up to the A34.

It then turns west and into dual carriageway at a roundabout near the Isle of Wight ferry terminal, past the docks and through Town Quay to run along West Quay Road, continuing past Leisure World and Ikea (which is partially responsible for congestion on the road and immediate surroundings due to its popularity, particularly on weekends).

The A33 then bears left slightly to carry on along the Millbrook Road West dual carriageway to meet the M271 and A35 at Redbridge Flyover.