Roadworks are taking place on a major route near Morpeth to improve the surface.
The northbound carriageway of the A1 was closed overnight from Friday and Monday, between the Clifton Interchange and Warreners House (Morpeth North).
The Highways Agency said the closure was needed to resurface deep sections of the road, which required the use of large machinery.
Further work will be carried out between July 14 and August 11 when a contraflow will be in operation on the southbound carriageway.
Project Manager Nick Adshead said: “This work will provide an improved road surface for drivers and improve safety along this section of the A1.
“The work is being carried out in two phases to minimise the impact of the work on drivers.
“During the closures, drivers are asked to take extra care and leave more time for their journeys.
“The second phase of work does not require as much machinery and we are able to keep one lane of traffic in each direction in contraflow on the southbound carriageway.”