Update for week commencing 25/11/24
 
Current and Upcoming works:
 
Starting this Saturday Night Harvil Road at New Chiltern Line Bridge – Night Time Road Closures over 4 Saturday Nights 23/11, 30/11, 07/12 & 14/12 (9pm to 6am)
HS2/SCS have requested 4 Night time Road Closures on Harvil Road (between 9pm to 6am) on 4 consecutive Saturday Nights from Sat 23/11 until Sat 14/12. These works are to survey the Butt Welds underneath and on top of the new Chiltern Line Bridge over Harvil Road.
The work can only be done on a Saturday Night due to limited Railway Possessions being available and over 4 Saturday Night Shifts as there are a lot of Welds that must be checked.
Dates:
•    23/11/24 – 24/11/24 (9pm until 6am)       
•    30/11/24 – 01/12/24 (9pm until 6am)
•    07/12/24 – 08/12/24 (9pm until 6am)       
•    14/12/24 – 15/12/24 (9pm until 6am)
•    
New Road Closure of Skip Lane for Surveys of Utilities & Drainage – 10pm to 5am over 2 Phases between 30/11 and 04/12 (Phase 1) and 07/12 and 08/12 (Phase 2 Contingency Shift).
•    HS2/SCS will be carrying out Surveys of the Utilities & Drainage on the section of road between Certas Oil Depot and the old Skip Lane junction (by the old Harvil Rd Bridge over the Chiltern Line).  
•    The Road will be Closed at Night between 10pm to 5am on the dates above.  
•    These works will not affect users of Harvil Road and will only impact the Businesses that use Skip Lane.
River Pinn Realignment Construction – works now completed
From 23/05 to 08/11 HS2/SCS carried out the River Pinn Realignment works which are now complete. The scope of works included:
•    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.
•    The construction of a new Footpath along the Realigned River course and installation of permanent drainage outlets
There will also be the installation of the new Footbridge structure over the new River channel to connect the U45, U46 and U47 Public Rights of Way but that will now not happen until 2025.

•  Updated SCS Noise Barrier Testing near Breakspear Road South – June 2024 to Mar 2025
There will be Noise Barrier testing from late June until at least March 2025 for up to 24 hours a day, 7 days a week within the HS2/SCS Site to the west of the entrance off Breakspear Road South. 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).
HS2/SCS are gearing up to commence the next Phase of testing, MFD (main fatigue and dynamic test) testing of the Noise Barrier Panels which is expected to commence in early 2025. A test setup of the Noise Barriers will be constructed like the image below. The panels will be fixed to the piles and secured by the torsion beam (which have already been tested) and continuous shaking of the panels will be undertaken with a setup matching that of figure 2 below.  Upon completion of the MFD testing of the piles, HS2/SCS will commence the Acoustic testing of the Noise Barrier Panels, the test acoustic barriers will be fitted with Acoustic Absorbers and rubber gap filler, Acoustic Steps, and this will be undertaken in March 2025.

Working Hours at Breakspear Rd South Site for Construction of Retained Embankments – June to Dec 2024
 
From 17/06 to 31/12 HS2/SCS will be constructing the 3 Retained Embankments which connect West Ruislip Portal to the Copthall Tunnel.
At present, the extended hours consent has been removed by LBH which means this activity is only being carried out during Core Working Hours (Mon to Fri 8am to 6pm & Sat 8am to 1pm).
During the construction of the Embankments (that are either side of the River Pinn & Breakspear Rd South HS2 Bridges as shown on the Map below) there is expected to be 10,000 lorry loads of material brought into the Sites from Harvil Rd Gate 2 and across the Internal Haul Roads. Lorries that are unloading on the west side of Breakspear Rd South will exit onto Breakspear Rd South on the HS2 Approved Lorry Route, and lorries unloading on the east side of Breakspear Rd South will continue on the Internal Haul Road to exit at West Ruislip on that HS2 Approved Lorry Route.
HS2/SCS will be building the Embankments to the required height using machinery for delivery and placement of material and the compaction of placed material will be carried out using vibratory rollers.
 
LBH will be keeping close tabs on the lorry movements during these works.