Trains will run from Aberdeen to Dyce today for the first time since a massive improvement project began on the tracks in the middle of May.
Engineering work on the line meant that passengers heading north from the Granite City had to make the trip to its nearest station via a replacement bus service.
The closure came as part of a wider programme to double the track between Aberdeen and Inverness, and meant increased journey times for thousands of customers.
Network Rail workers have laid 12 miles of rail between Aberdeen and Dyce during the latest phase of the project, and have replaced or refurbished five bridges along the route.
Yesterday, Scotrail confirmed that normal service would be resumed between the two stations this morning.
Meanwhile, the organisation explained that the first of its fully upgraded InterCity trains has arrived in Scotland.
The first of the 26-strong high-speed fleet travelled from Doncaster and crossed the border just before 8pm on Friday, ahead of its arrival at the Haymarket depot in Edinburgh.
The trains date back to the 1970s, but they have all been renovated.
The new arrival will enter service between Aberdeen and Edinburgh in the coming weeks, once crew training is complete.
In total, 17 five-carriage trains and nine four-carriage trains will be used on InterCity services linking Scotland’s seven cities.
Compared with ScotRail’s current fleet, the InterCity trains offer more seats and increased luggage space.
They will also offer an enhanced food and drink service, with a new cafe area on board in addition to the usual trolley selection.
Chris Tait, ScotRail’s high-speed trains project manager, said: “I’m delighted that the first of our new trains has arrived in Scotland.
“They will transform rail travel by providing more seats and a much-improved on-board environment.
“It’s all part of our work to build the best railway Scotland’s ever had.”
George Davidson, Transport Scotland’s rolling stock manager, described the development as an “important milestone” in the body’s efforts to improve rail travel.
However, the new service has attracted criticism due to delays in its delivery.
Refurbished trains were supposed to be introduced along the line in May, but ScotRail managing director Alex Hynes admitted the project had been “a challenge” during a grilling by MSPs.