Monday 11 Jan 2021
11,000 tonne tunnel to be installed on the railway in first for UK engineering
- Massive concrete structure to be pushed under the East Coast Main Line as part of £1.2bn upgrade
- Major works to occur over nine days between 16 and 24 January
- Hundreds of hours of passenger disruption to be avoided by industry-leading engineering technique
- New tunnel will separate slow-moving freight from long-distance passenger trains – speeding up journeys and improving reliability
A massive 11,000 tonne curved concrete box is to be pushed under one of the country’s most famous railway lines in a first for UK engineering.
The structure, which weighs more than the Eiffel Tower, is being installed in a painstaking nine-day operation as part of the £1.2bn upgrade of the East Coast Main Line.
Engineers have spent the last nine months building the new tunnel by the side of the East Coast Main Line as trains have sped past between London and Edinburgh.
And now the massive concrete construction is ready to be pushed into place along pre-installed guiding supports, after the three tracks above have been temporarily removed.
Using a traditional method of installing a tunnel on the crucial stretch of the line would have meant closing it completely for about a month. But the pre-constructed structure will be installed in just nine days – and means a reduced level of service will be able to operate at the same time.
Paul Rutter, Route Director for Network Rail’s East Coast Route, said: “This is a massive engineering challenge, but it will avoid hundreds of hours of closure on one of the most important lines in the country.
“This is industry leading work that really puts the needs of passengers first in how we approach improvement work.
“In the past, Network Rail might have approached this problem by thinking about the easiest way to do the engineering. Instead, I’m proud to say we have come up with a creative and innovative solution that will deliver massive benefits while keeping disruption to a minimum.”
Rail Minister, Chris Heaton Harris, said: “This is an astonishing feat, underlining this country’s reputation for pioneering engineering and delivering major upgrades for passengers.
“By undertaking a project of this magnitude now we are making the most of our railways being quieter, putting in place vital new infrastructure that will improve our railways for when passengers are safe to return.”
The work is being carried out at Werrington, north of Peterborough, where the East Coast Main Line is crossed by a slow-moving east-west freight route. Installing the tunnel will take slower freight trains off the fast route, speeding up services and improving reliability, while also reducing the amount of maintenance required on that section of track.
The new tunnel is a 155-metre curved concrete box that will be painstakingly pushed at 150cm per hour, using massive jacks to propel and steer it into place. It will be the first time this construction technique has been used in this way in the UK.
While the line will be kept open during the work, it will mean a very limited number of services will run south of Grantham during the nine-day piece of work. Passengers who must travel are asked to plan ahead and think about whether journeys are necessary while the installation is carried out.
Network Rail is also continuing with essential work at London King’s Cross, which will impact on train services on weekends throughout January. Teams will be installing new overhead line equipment and improving the signalling. The work is being carried out safely, in line with Government guidance.
People should continue to follow the latest Government guidance and must stay at home except for limited reasons. If you need to travel, you should walk or cycle where possible, and plan ahead to avoid busy times and routes on public transport. Passengers are strongly advised to check their journeys via National Rail Enquiries, at EastCoastUpgrade.co.uk or on their train operator’s website and allow plenty of time.
A spokesperson on behalf of train operators on the route said: “Passengers should only travel south of Grantham during these nine days if they have to. We strongly advise people to check before they travel and allow plenty of time as journeys will take longer.
“We thank our passengers for their patience whilst this essential work on the East Coast Upgrade, which will bring more services and a more reliable railway for passengers, is carried out.”
Notes to Editors
Network Rail has announced dates where there will be no services or a reduced service to and from London King’s Cross. Passengers who must travel are strongly advised to plan their journeys in advance.
- Saturday 16 and Sunday 17 January - Reduced service to and from London King’s Cross. No trains between Peterborough and Hitchin.
- Saturday 23 and Sunday 24 January - Reduced service to and from London King’s Cross. No trains between Peterborough and Hitchin.
- Saturday 30 and Sunday 31 January – No services to or from King’s Cross Station, to or from St Pancras International via Finsbury Park, or between Peterborough and Hitchin.
- Sundays 7 and 14 February - Reduced service to and from London King’s Cross. No trains between Peterborough and Hitchin
- Sunday 21 February - Reduced service to and from London King’s Cross. No trains between Stevenage and Alexandra Palace
- Friday 26, Saturday 27 and Sunday 28 February – No services to or from King’s Cross Station or to or from St Pancras International via Finsbury Park
- Monday 1 March through to Thursday 22 April – A temporary, dedicated timetable will operate at King’s Cross station to support the relaying of the redesigned track layout with reduced services operating.
- Friday 23, Saturday 24 and Sunday 25 April – No services to or from King’s Cross Station for all three days or to or from St Pancras International via Finsbury Park on the Saturday and Sunday
- Monday 26 April through to Thursday 3 June – A further temporary, dedicated timetable will operate at King’s Cross station to support the relaying of the redesigned track layout with reduced services operating.
- Friday 4 June – From midday no services to or from King’s Cross Station or to or from St Pancras International via Finsbury Park
- Saturday 5 and Sunday 6 June – No services to or from King’s Cross Station or to or from St Pancras International via Finsbury Park
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About Network Rail
We own, operate and develop Britain's railway infrastructure; that's 20,000 miles of track, 30,000 bridges, tunnels and viaducts and the thousands of signals, level crossings and stations. We run 20 of the UK's largest stations while all the others, over 2,500, are run by the country's train operating companies.
Usually, there are almost five million journeys made in the UK and over 600 freight trains run on the network. People depend on Britain's railway for their daily commute, to visit friends and loved ones and to get them home safe every day. Our role is to deliver a safe and reliable railway, so we carefully manage and deliver thousands of projects every year that form part of the multi-billion pound Railway Upgrade Plan, to grow and expand the nation's railway network to respond to the tremendous growth and demand the railway has experienced - a doubling of passenger journeys over the past 20 years.