A major operation on the A90 near Stonehaven will see five beams totalling almost 350 tonnes lowered into place as part of the Aberdeen western by-pass project.
The installation of the 43-metre-long beams will see the B979 between New Mains of Ury and Glenury Road will close from 8pm on Friday until around 6am on Monday.
The road will close again at 8pm on Monday July 3 for overnight installation works, including the bases for parapets.
Transport Scotland said there will be no access to the A90 via the new southbound slip road during the closures and has advised drivers to plan extra time for their journey through the area of the Aberdeen Western Peripheral Route/Balmedie to Tipperty (AWPR/B-T) project.
Runners at the weekend’s Stonehaven half-marathon have been encouraged to factor the roadworks into their race preparations.
A Transport Scotland spokesperson said: “These vital bridge reconstruction works at Stonehaven are taking place over a weekend and at night when roads are quieter to minimise inconvenience to road users.
“Once the beams are in place, the contractor will continue to reconstruct the A90 southbound carriageway. After these works are complete, the contraflow currently on the northbound carriageway will move to the new southbound carriageway to allow the remainder of the existing bridge to be demolished and reconstructed.
“The works at Stonehaven involves widening the B979 Netherley Road and the creation of a new roundabout, which will form the junction between the AWPR, the A90 and the B979. A new slip road on to the A90 from the B979 has already opened.”
Over the next three decades, the AWPR/B-T is expected to bring in an additional £6 billion to the north-east economy and create around 14,000 new jobs.
Around 1,500 are currently working on the project, including on-the-job training for apprentices and local employment opportunities for long-term unemployed people.