Part of the A19 will be closed over the weekend as a bridge is being demolished.
Highways England will be removing the 13-metre wide bridge in South Tyneside from Friday to Monday.
Removing West House Bridleway Bridge, near Testo’s Roundabout, will create room to build the new flyover.
To safely carry out the demolition, Highways England is closing the A19 between Testo’s and Lindisfarne Roundabout from 8pm Friday until 6am on Monday 22 July.
Highways England senior project manager Tom Howard said: “This is a big step forward for the project.
"We would advise drivers to plan ahead, the diversion is nearly four miles long and is expected to add between six and 10 minutes to journey times.
"I want to thank people in advance for their patience while we carry out this important work.”
Routes from Testo’s Roundabout will use the A184 to White Mare Pool roundabout and will then return north to Lindisfarne Roundabout using the A194. Local diversions will also be in place for traffic travelling to Boldon.
The demolition is a key part of the two-and-a-half-year project, which will see the A19 raised above the existing Testo’s Roundabout and new slip roads built to connect the roundabout to the A184.
Once complete, drivers travelling on the A19 will no longer need to negotiate a junction, instead continuing uninterrupted.
