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Highfurlong Brook is first HS2 viaduct to finish deck beam installation

The Highfurlong Brook Viaduct in [1] has all its deck beams installed, becoming the first on the [2] project to reach this stage.

The 163m-long viaduct is near the village of Aston le Walls, and is one of more than fifty major viaducts being constructed to carry the high-speed rail project between [3] and [4].

High Furlong Viaduct beams from the side Nov2023
High Furlong Viaduct beams from the side Nov2023 // Credit: HS2

The viaduct is made up of seven spans, each comprising four beams weighing up to fifty-six tonnes, which engineers lifted into position over two months to form the backbone of the structure. Each of the twenty-five-metre-long beams was built off-site and  delivered overnight to minimise disruption. The deck will support the track and electrical systems, and will be installed next year, along with parapets along either side.

The viaduct is one of fifteen viaduct being built by HS2’s main works contractor EKFB, which as a consortium comprising Eiffage, Kier, Ferrovial Construction and [5]. The contractor will also deliver the earthworks that will support the railway at each end.

High Furlong Viaduct crane at work Oct 2023
High Furlong Viaduct crane at work Oct 2023 // Credit: HS2

The completed viaduct will cross Highfurlong Brook, a tributary of the River Cherwell which joins the Thames at [6], at a height of around nine metres. The viaduct crosses the brook and its floodplain.

Significant progress has also been made at HS2’s other major viaducts over recent weeks. Engineers have poured the first concrete for the approach viaducts at Birmingham Curzon Street station[7], and have installed the first beams at Thame Valley[8] near [9].

In total, HS2 is building more than 500 bridging structures – ranging from small road bridges to massive viaducts like record-breaking [10] Viaduct which will become the longest in the UK and recently passed the half-way point.

Highfurlong Brook Viaduct showing the four beams that make up a span Nov2023
Highfurlong Brook Viaduct showing the four beams that make up a span Nov2023 // Credit: HS2

Paul Cooper, HS2 Ltd’s Senior Project Manager said: “Once complete, HS2 will transform journeys between London and the West [11], freeing up space on the busiest part of the west coast mainline and helping to boost growth around the major station sites.

“But it’s also important that we reduce disruption for communities during construction. Off-site manufacturing of deck beams and out of hours delivery is an important part of that effort and it’s great to see them all now in position at Highfurlong Brook.”

Sean Lang, EKFB’s Project Director, said: “We’re making considerable progress with our structures and earthworks and to see the beams lifted into position at Highfurlong Brook Viaduct is testament to the on-going collaborative effort of the Joint Venture and its supply chain partners. Utilising our network of internal access roads and on-site concrete batching plant, we’re minimising our impact on the local communities that live close to our works.”

References

  1. ^ (www.railadvent.co.uk)
  2. ^ (www.railadvent.co.uk)
  3. ^ (www.railadvent.co.uk)
  4. ^ (www.railadvent.co.uk)
  5. ^ (www.railadvent.co.uk)
  6. ^ (www.railadvent.co.uk)
  7. ^ approach viaducts at Birmingham Curzon Street station (www.railadvent.co.uk)
  8. ^ installed the first beams at Thame Valley (www.railadvent.co.uk)
  9. ^ (www.railadvent.co.uk)
  10. ^ (www.railadvent.co.uk)
  11. ^ (www.railadvent.co.uk)

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