A slip road will close this weekend to allow work to progress on the £750million Aberdeen bypass.
Transport Scotland said the Findon northbound merge onto the A90 main carriageway will be unavailable from around 8pm on Friday until 6am on Monday.
A southbound closure will follow in the coming weeks to allow the contractor to install street lighting and permanent signage.
Diversions will be sign-posted.
Transport chiefs are still unable to update the timescale for completion of the huge project following weeks of disruption.
Work had to stop on the road when the Beast from the East weather front brought heavy snowfalls and storms.
And that added to the problems caused by the collapse of contractor Carillion in January, which left its two partners scrambling to plug the gap.
A Transport Scotland spokesman said:“These temporary closures of the slip roads at Findon Junction have been timed to take place during weekends when traffic is normally quieter.”
Construction first began on the AWPR in February 2015 and earlier this year a completion date of “spring” was given.
The spokesman said that Aberdeen Roads Limited continued to give assurances it was “fully committed” to finishing the project “safely and in the shortest timescale possible”.
He added: “It is in the interests of all partners to complete the project and open the new roads as quickly as it is safe to do so.
“Recent weather events will clearly have some effect, but it’s too early to quantify that. We are working closely with ARL to understand these impacts together with any from the Carillion announcement to consider the necessary mitigation.”
North East Conservative MSP Liam Kerr said: “It is disappointing that Transport Scotland won’t just hold their hands up and admit that the deadline will be missed.
“Businesses in the north-east need certainty as to when the bypass will open to traffic.
“The Balmedie-Tipperty section was due to open almost a year ago, and it is clear to see for anyone driving around the route that the contractors will be struggling to meet the spring target.”
