Improve approximately one-mile (1,5 km) stretch of the A63 at Castle Street by lowering the level of the road into a cutting by approximately 7.6 yards (7 metres) at Mytongate Junction. Ferensway and Commercial Road would pass over, being raised by approximately 1.09 yards (1 metre), creating a split-level junction.

Widen the eastbound carriageway to three lanes between Princes Dock Street and Market Place, with the nearside lane being marked for local weaving traffic. The westbound carriageway would have two lanes, as at present

Provide footbridges (suitable for pedestrians, cyclists and disabled users at Porter Street and in front of Princes Quay shopping centre. We are proposing to replace the existing signalised crossing at Market Place by upgrading an existing route that runs underneath the A63 from High Street to Blackfriargate to allow access underneath Castle Street.

Close accesses from Castle Street to the Holiday Inn Hotel, Waverley Street, St James Street, Dagger Lane, Fish Street, Vicar Lane and Humber Dock Street on safety grounds. Alternative accesses would be provided by altering priorities on side roads.

Restrict access for local businesses via Spruce Road to improve local traffic movement.

Two grade II listed buildings (Castle buildings and the Earl De Grey public house) will be maintained.

The Highways Agency has procured these works under NEC/ECI works contract on an Early Contractor Involvement contract aproach (Main Option C).