Highways England has completed the installation of a new bridge barrier on both carriageways and contractors will now replace the main bridge expansion joint on the eastbound side.
The latest phase will see narrow lanes and the reduced speed limit removed from the westbound carriageway in time for the Bank Holiday weekend. A 30mph speed limit with narrow lanes will be in place across the bridge on the eastbound carriageway, enforced by a temporary speed camera.
The expansion joint work will be carried out overnight between 8pm and 6am with a full closure of the eastbound carriageway. Clearly signed diversions will be in place 7 nights a week.
Highways England project manager Tim Calvert said:
We would like to thank drivers and residents for their continued patience while this important work takes place to the bridge at Bishopthorpe.
This project is necessary to ensure the continued safety of road users who use this route.
The reduced speed limit is necessary to ensure the safety of motorists as well as the workers on site.
During the closures, traffic will be diverted around York via the northern outer ring road (A1237). Local traffic will be able to follow the A1036 Tadcaster Road to the A19 Fishergate and then back on to the A64.
The work is expected to be completed by mid-July.
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.