The Queensferry Crossing is to partially close for five days to allow “snagging work” to be fixed.
However, the work will finally see the £1.35 billion bridge become part of the motorway network, with a 70mph speed limit.
Road users are being provided with advance notice of upcoming works.
Having closely monitored the new bridge since traffic started using it at the end of August, the contractors have identified remedial works.
This will mean the surface around the bridge expansion joints will have to be lifted.
The work will allow the bridge to achieve its next key milestone – opening at a 70mph speed limit – by the end of December subject to weather conditions.
The five-day programme of works is weather sensitive and if the weather is unfavourable this may result in having to reschedule the start of the work or an element of the work once it has begun.
Project chiefs say any change will be publicised as soon as possible to keep road users informed.
The snagging works are planned to start at 10pm on Thursday and finish by 6am on Wednesday December 6.
While work is carried out southbound traffic will use the Forth Road Bridge and northbound traffic will use the Queensferry Crossing.
Transport Minister Humza Yousaf said: “Successfully completing this snagging work will allow the Queensferry Crossing to reach its next major milestone and operate at a 70 mph speed limit by the end of December.
“Snagging issues are normal with any major infrastructure project on this scale and complexity.”
