Train line between Aberdeen and Dyce to shut for 14 weeks
The line will also be closed over Easter weekend and May bank holiday weekend.
The Aberdeen to Dyce train line will be shut for 14 weeks as part of a multi-million pound upgrade project.
The line will also be closed for preparation work over Easter weekend on April 1 and May bank holiday weekend from May 4 until May 7.
The Aberdeen to Inverness improvement project is a Scottish Government-funded upgrade of the railway between the two cities.
There is currently only a single track between the two cities but this work will see a new track being added.
Replacement bus services will be in operation during the upgrade work that begins on May 12.
ScotRail Alliance infrastructure director, David Dickson, said: "The investment we are making to upgrade the line between Aberdeen and Inverness is all part of our plan to build the best railway Scotland has ever had.
"This is a massive project, which will ultimately transform services in the north of Scotland.
"We know lengthy line closures are a real inconvenience for customers and we will do everything we can to keep people moving during the upgrade work."