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Track and infrastructure upgrades on the Great Western main line

Major upgrades are being delivered to allow more trains to run more reliably once Crossrail services begin. These include:

Stockley Flyover

Stockley Bridge replacement works April 2014_136396

A new flyover is being installed at the junction to Heathrow in west London to add capacity this busy section of the railway.  This consists of a new bridge to carry the trains coming from Heathrow over the Great Western main line leading to a viaduct and two ramps to link in with the tracks heading into Paddington.

At 120m long, the 1,000 tonne bridge is the largest single span rail bridge to have been installed anywhere to the west of London since the days of Brunel and the whole structure stretches to more than a mile in length. 

Once complete, it will ensure that Crossrail and Heathrow Express services heading towards central London will be able to join the Great Western main line without delaying, or being delayed, by other trains using the route.

The first ramp, now being used by Heathrow Connect services, has been in use since January 2015. The second ramp, that will be used by Heathrow Express services, is currently being constructed and will come into service in 2017.

The bridge has been named ‘Sams Bridge’, after Richard Sams who had been the project engineer on Stockley from its inception in 2011 and whose work on the project played a major part in ensuring its success.  Richard sadly died suddenly in 2014 while on holiday in Mexico.

Acton Dive-under

Contstruction of new diveunder at Acton_carousel_210013

A dive-under is an underpass which allows trains to pass under another railway track without being held up by trains on the above track.  The new dive-under at Acton is needed so that trains leaving the nearby freight yard do not delay passenger trains heading toward central London. 

Currently freight trains leave the yard by crossing the passenger tracks between Ealing Broadway and Acton Main Line stations.  The new dive-under will allow Paddington-bound passenger trains to pass under an exiting freight train without being delayed, increasing capacity and reliability.

The excavation of the dive-under itself began in October 2013 following nearly two years of work to re-configure the freight yard, which involved moving the tracks in the yard eight metres to the north, line by line over many weekends, and then putting in a new junction. Track is currently being installed within the dive-under which will come into service at the end of 2016. 

Electrification

Overhead power works near between Maidenhead and Slough_218136

The Crossrail programme includes the electrification of the Great Western route between Stockley Flyover and Maidenhead, beyond which the task is picked up by Network Rail’s Great Western Mainline electrification team. 

This work has involved the installation of over 1,000 piles beside the tracks to provide foundations for the overhead line equipment and the erection of steel structures at approximately 50 metre intervals on both the main and relief lines to support the overhead wires.  Vegetation has also needed to be cleared along the trackside in order to provide a safe environment for the operation of the high voltage wires.

The piling is nearing completion.  Most of the structures have been erected and the first wires were installed between Burnham and Taplow at Christmas 2015.  Construction is expected to be completed by Christmas 2016, allowing testing to take place soon after.  The overhead lines are expected to be operational from the end of 2016.  This will not only allow the operation of the electric Crossrail trains from December 2019 but it will also support the earlier introduction of electric trains on the Great Western main line.


Current Works

Kensal Green

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Description of work:

Construction works are to be undertaken on and adjacent to the existing railway between Scrubs Lane Bridge and Ladbroke Grove Bridge. Work includes trench excavations, breakout of concrete obstructions and installation of new track.

Details of work as PDF:

Kensal Green

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Description of work:

As part of our Railway Upgrade Plan, Network Rail is undertaking works in your area on behalf of the Crossrail Programme. Construction works are to be undertaken on the existing railway immediately east and west of Great Western Road. These works are part of the adjustment to the existing railway infrastructure to permit the operation of new Crossrail trains.

Details of work as PDF:

Stockley Junction and Flyover

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Stockley Junction and Flyover

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Description of work:

Piling and other construction works near Guinness Close, Windsor Gardens, Marlow Gardens, Clevedon Gardens and Burnham Gardens

Details of work as PDF:

Stockley Junction and Flyover

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Stockley Junction and Flyover

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Description of work:

Works on and around the tracks behind Keith Road

Details of work as PDF:

Old Oak Common Depot

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Description of work:

Construction and operation of a depot for a logistics hub at Old Oak Common

Details of work as PDF:

Old Oak Common Depot

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Description of work:

Commencement of construction of new depot for Crossrail trains at Old Oak Common

Details of work as PDF:

Old Oak Common Depot

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Description of work:

Installation of new power cables from Old Oak Common to Hayes & Harlington station as part of upgrading the power supply in preparation for the new rolling stock

Details of work as PDF:

Old Oak Common Depot

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Description of work:

Installation of new power cables from Old Oak Common to Hayes & Harlington station as part of upgrading the power supply in preparation for the new rolling stock

Details of work as PDF:

Old Oak Common Depot

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Description of work:

Work to overhead line structures and power supplies

Details of work as PDF:

Royal Oak Portal headhouse

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Description of work:

Update on Hampden Street footbridge works to install a new southern ramp and staircase. Remaining works to be completed during a footbridge closure during the October half-term holiday, between Saturday 22 and Sunday 30 October 2016.

Details of work as PDF:

Old Oak Common to Stockley

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Description of work:

Installation of new power cables from Old Oak Common to Hayes & Harlington station as part of upgrading the power supply in preparation for the new rolling stock


Contact us

Complete our contact us form to receive regular updates about work in the local area. 

If you have queries about the work taking place please contact Network Rail, which is delivering the Crossrail upgrades:

40 Stations Connected

Building the new railway involves constructing 10 new stations in central London and Docklands and upgrading 30 existing stations between Reading and Heathrow in the west and Shenfield and Abbey Wood in the east.