There will be a major disruption in trains due to the planned work on Christmas and in the new year.
A busy commuter line is expected to close early next year as work continues in the Burgess Hill and Hayward Heath areas.
This is likely to affect the passengers going here. Brighton, Lewis and Three Bridges.
Trains in London will also be disrupted, affecting Sussexes traveling to the capital during the festive period.
Chris Fowler, Southern Trains’ customer service director, said: “Some journeys will take longer than usual, so please check routes and times in advance.”
“We are working closely with Network Rail and other transportation partners to ensure our customers get where they need to be when services are impacted.
“These engineering programs are essential to providing our customers with the reliable, timely services they rightly expect.
In early 2022, Copyhold Junction near Haywards Heath will be rebuilt with new track and a new track will be laid at Burgess Hill.
From 19 to 27 February, the line between Three Bridges, Brighton and Lewis will be closed, with replacement bus services operating.
It is also planned to work on weekends after the main shutdown.
Network Rail Sussex Route Director Katie Frost said the week-long errands called “intercepts” allow commuters to benefit from upgrades more quickly.
“Putting passengers first is at the heart of what we do, and it makes everything work, including how we plan and operate,” she said.
“The disruption is a huge opportunity for us to do more to deliver more efficiently, reduce overall disruption to services, and ultimately improve travel for our passengers,” she said.
“But we will not forget that the success of previous extended line closures was in no small part due to our strong focus on passenger and stakeholder management and our close partnership with train operator partners.
“Therefore we will work closely with local stakeholders and train operators to ensure that people living on the railways, commuters and businesses are fully aware of the impact on their travel and the alternative travel options available to them.”
Trains will not run between East Croydon and London Victoria on Christmas and New Years.
The route will first be closed on Saturday, November 27 and Sunday, November 28.
In a further ten-day shutdown from 25 December to 3 January, a new track and ballast will be built at Poupparts Junction near Clapham.
Signal gantry will also be installed to house new signaling equipment, cable routes and power supply points along the Balham to London Victoria lines.
During this time no trains will run between East Croydon and London Victoria, while most southern trains will be diverted towards London Bridge.
The resigned project is part of a four-year program of investment to upgrade signaling and track at major junctions on the South London lines in London Victoria.
In total, more than 1,000 meters of track, 7,000 tons of ballast and eight set points will be replaced with new, more reliable equipment.