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Exclusive | How HS2 will cut Euston disruption

euston visual

New Civil Engineer can exclusively reveal that changes to the High Speed 2 (HS2) design for Euston station aims to cut disruption to the Network Rail side of the station and surrounding area during construction.

The plans set out in the hybrid bill said three bridges over rail tracks in the approach to Euston would have to be demolished and Network Rail platforms would be taken out of action to allow the construction of the new HS2 platforms. Both actions would have caused significant disruption to passengers and the surrounding Camden community.

HS2 Ltd programme director phase 1 - south, Rob Carr, has told New Civil Engineer that changes to the design of the HS2 side of the station mean that there will be a “significant reduction” in the disruption to the station and the surrounding communities.

Originally the HS2 trains approached the station at approximately the same level as the platforms. The new plans will see the tracks lowered by 0.5m at the north end. The approach tunnels will be elongated to extend underneath Mornington Street Bridge, the first of the bridges. The trains will then be brought up to platform level on a slope. This means the tracks will be low enough to pass under the following existing Granby Terrace and Hampstead bridges without the need to demolish and rebuild them.

The piling line for the station has been moved from underneath the tracks on Network Rail platform 18 to under the adjacent Cardington Street, meaning no platforms will need to be taken out of service during construction, said Carr.

“We now don’t have to put 28 sets of switches and crossings in the throat [the narrow section of the tracks before they fan out to serve the platforms]  just to deal with what we were going to do,” he said. “We have maintained the existing approach the six track approach when we were going to reduce that down to four. Imagine the disruption if we lost a track into Euston.

“We’re moving our station off to the side so we can build our station without much, if any change to the existing station now.”

Disruption to the existing station he says will now be limited to the enabling works needed to move a Network Rail power signal box on the HS2 site to a temporary site on the other side of the station.

The design is still in development he said, and with the appointment of the main civil contractors, he hopes the design can be refined further over the course of the next year.

Carr was talking exclusively to New Civil Engineer about plans for Euston station. The full interview can be read here.

 

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