Below we take a look at what Nexus is doing, how long the work will take and what Central will look like when it is finished.
When are the closures and when will work finish?
Metro Central Station is closed from 8pm each evening Sunday to Thursday, before reopening each morning.
The evening closures, which began on September 14, 2015, will last until June 30 this year.
It will also shut for three full days in March, from 8pm on March 10 until the end of services on March 13.
During the three days, passengers heading for Newcastle city centre are advised to get off at Monument or Haymarket.
People arriving on mainline rail services at Newcastle Central Station should also use Monument.
Central will open as usual from 5am on March 14.
What is happening?
The station, which is used by 5.3 million people a year and opened in 1981, is being redecorated, and improvements made to accessibility, information and waiting facilities.
The three day closure in March is needed so engineers can replace electrical distribution and control equipment.
Metro services will run through Central but not stop there.
Raymond Johnstone, director of rail and infrastructure at Nexus, said: “I apologise for any inconvenience this closure causes to our customers.
“The station has to be shut so that we can carry out important electrical works and this can only be done safely during a full closure.”
What will it look like afterwards?
The inside will be largely white, with black tiles marking the safe distance from the platform.
There will be signs on enamel panels as well as new seating and brighter lighting. Tactile paving will help passengers with visual impairments.
Central is the third busiest station on the network after Monument and Haymarket.
Neil Blagburn, head of renewals at Nexus, said: “The project at Central Station will give the Metro concourse and platforms a vibrant, clean and more modern appearance.
“This is vital investment in the future of the Metro system and will dramatically improve the facilities for the five million customers who pass through there each year.”
An artists impression of the Central Station after the £6 million revampAn artists impression of the Central Station after the £6 million revamp
Who is paying?
The refurbishment will cost £6m, with £3.5m coming from the £389m Metro ‘all change’ programme alongside a £2.5m contribution from the government’s Local Growth Fund.
The Local Growth Fund will also fund a new southern entrance for Central railway station to give access to the Stephenson Quarter.
Is there any other work being done?
Nexus is investing £9m in a new digital radio system in the drivers’ cabs of Metro’s 90 trains and in the control room at South Gosforth. Work will be completed by Spring 2016.
Last year, a five-year programme to refurbish 86 Metro carriages was finished.
New lighting and seating was installed, and the carriages made more accessible to disabled people.
How can I have my say?
Metro passengers can get involved in a consultation organised by the North East Regional Development Authority.
The organisation will include ideas from local people in a 20-year plan, ‘Our Journey’, which transport bosses will use to inform future decisions, including on work to the Metr