HS2 updates

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From HS2

1   SCS Community Event in Ickenham Tue 23/07 between 4pm and 7pm
2   Extended Hours TBM Segment deliveries by Lorry into West Ruislip Portal – until 12/07
3   River Pinn Realignment and Footpath & Footbridge Construction – May to Oct 2024
4   SCS Noise Barrier Testing near Breakspear Road South – June to October 2024
5   Forward Planning – Breakspear Rd South – Road Closure under Railway Bridge for Culvert Trial Holes – Mon 29/07 to Sun 11/08
 
 
1 SCS Community Event in Ickenham Tue 23/07 between 4pm and 7pm
 
HS2 SCS will be holding a Community Event at Ickenham United Reform Church, Swakeleys Rd, Ickenham, UB10 8BE on Tue 23/07 between 4pm and 7pm where their Project Team will discuss the following areas:
  Copthall Tunnel progress Tunnelling in Hillingdon Our environmental commitments during construction Drone Footage of SCS Sites  
This is a Drop-In Event so feel free to attend between 4pm and 7pm
 
 
2 Extended Hours TBM Segment deliveries by Lorry into West Ruislip Portal – until 12/07
 
Deliveries of TBM Segments by Railway have now resumed following the issue with the Rail Siding recently but due to ongoing issues with HS2/SCS securing any more than 5 slots per week to run Train deliveries, HS2/SCS will continue to transport TBM Segments by Lorry into West Ruislip to maintain TBM operations and build up a surplus of TBM Segments in the Segment Yard.
 
Recently LBH had allowed HS2/SCS to deliver TBM Segments on lorries into West Ruislip Portal over a 24/7 period, but this has now been scaled back to the initial Extended Hours so these TBM Segments on lorries can now be delivered Mon to Sat between 8am and 10pm. This agreement is in place until 12/07 and will be reviewed again at that time.
 
 
3 River Pinn Realignment and Footpath & Footbridge Construction – May to Oct 2024
From 23/05 to 16/10 HS2/SCS will be carrying out the River Pinn Realignment works. This will involve installing a new Footbridge which will reconnect the U45, U47 and U46 Public Rights of Way and create a new footpath to replace the existing U47.
The scope of works includes: The installation of a dam and over pumping system to create a dry working environment for the Realignment of a section of the River Pinn The formation of a new channel along the consented route for the River Realignment. This will include all the necessary aquatic features and measures being taken to preserve existing wildlife in the River The construction of a new Footpath along the Realigned River course and installation of permanent drainage outlets The installation of the new Footbridge structure over the new River channel to connect the U45, U46 and U47 Public Rights of Way Please click on the link to view the HS2 Works Notification River Pinn Realignment with Footbridge and Footpath construction  https://assets.hs2.org.uk/wp-content/uploads/2024/05/ANL-River-Pinn-Realignment-with-Footbridge-and-Footpath-construction-May-2024.pdf
 
4 SCS Noise Barrier Testing near Breakspear Road South – June to October 2024
 
There will be Noise Barrier testing from late June to the end of October for 24 hours a day, 7 days a week within the HS2/SCS Site to the west of the entrance off Breakspear Road South (please note this was originally scheduled to start on 28/05). Noise Barrier Testing commenced on 27/06 with the Generator and Actuator Instrument being used 24/7 to test the piles and the ground around them in the 1st Phase of testing.
A temporary embankment has been constructed in the area where Noise Barriers have been installed and the structural integrity will be tested. The scope of the testing is to confirm that the pile foundation and the structure will not have any significant changes due to Trains passing the Noise Barrier.
The anticipated level of noise impact is expected to be minimal and will include the use of a generator which will power the instrument that will simulate the movement of the trains passing (the generator will be covered in acoustic barriers to minimise the noise).
 
The Trains using the HS2 Railway will not likely stop at night so the 24/7 testing is critical to simulate actual stress and strain on the Noise Barrier similar to the operational requirements and in reducing the duration of the test. This is fundamental to assuring Noise Barrier compliance.
For Further Details Please Click Here   https://www.hs2.org.uk/work-items/noise-barrier-testing-at-our-site-on-breakspear-road-south/#msdynmkt_trackingcontext=7e1297e1-0b97-4c38-ab8b-f3dc66bdde7c
 
5 Forward Planning – Breakspear Rd South – Road Closure under Railway Bridge for Culvert Trial Holes – Mon 29/07 to Sun 11/08
 
There has now been a change to the methodology of these works which require HS2/SCS to carry out further Trial Holes in order to finalise their design to replace the Culvert that crosses Breakspear Road South near to the Chiltern Line Bridge.
 
This means that there will still be the 2 Week Road Closure between 29/07 to 11/08 but this will be to excavate further Trial Holes (rather than replacing the Culvert). Once HS2/SCS are confident on their designs they will present them to LBH to agree a further Road Closure in order to install the replacement Culvert. This means that there will have to be not 1 but 2 Road Closures of Breakspear Road South in order to replace this Culvert which is not good news for residents nor those who use this busy road.
 
LBH will push for the final Road Closure to be carried out at a quieter time so it is likely that the final Road Closure will coincide with School Holidays (with the anticipated length of the final Road Closure also being 2 weeks).
 
At present the existing Culvert near the Chiltern Line Bridge does not have the required capacity to take away water run off from the road and as a consequence this area of road is susceptible to flood related issues. The installation of a new Culvert will be able to handle a larger volume of water and should therefore lead to less of a threat of flooding in this area.
 
Programme of works:
  Mon 29/07 to Sun 11/08 – Full Road Closure for excavating of Trial Holes (2 Weeks during School Summer Holidays) TBA – Full Road Closure for Culvert replacement works (2 weeks possibly later in 2024)