HS2 will be constructing the Colne Valley Viaduct over Moorhall Road during the Summer Holiday period this July and August, which means that there will be Temporary Traffic Lights, Night Time Road Closures and a 3-Week Full Road Closure (24 hours a day) on Moorhall Road over the coming weeks.

 There will be a 3 Week Full Road Closure of Moorhall Road (either side of the HS2 Haul Road Crossing) between 28/07 and 18/08 while the Viaduct is built over Moorhall Road (shown in Red). There are also 4-Way Traffic Lights during the Day (in White), and Night Time Road Closures (in Orange) in the weeks either side of the Full Road Closure.

 Unfortunately during the works there is no access to any vehicles including Emergency Services Vehicles (who have been notified of the Road Closure and the need to use alternative routes).

TfL have confirmed that the 331 will not run to Denham during this time but will be replaced by a Shuttle Service operated by HS2/Align that will run from Uxbridge Station through to Denham Train Station.

Route 331 will run from Uxbridge Station but rather than follow the normal route through Denham and Moorhall Road, Route 331 will run via Swakeleys Roundabout, Swakeleys Road, Harvil Road and then continue on the normal Route through Harefield, Northwood & onto Ruislip.

HS2/SCS have been in discussion with LBH Officers regarding the next Phase of works on Harvil Road that they hope to have completed by early July 2023 (prior to the major works on Moorhall Road for the Colne Valley Viaduct Crossing).

The 4 Week Full Road Closure has now been agreed with HS2/SCS, as this was seen as the best possible solution rather than facing a longer period of very disruptive Traffic Management under other proposals.

Please follow the link for the HS2 Communications regarding this Closure – For further information please see the works notification. https://www.hs2.org.uk/work-items/notice-of-harvil-road-closure/
The works being carried out during this Road Closure are the most disruptive remaining in the Realignment Programme, and once these works are completed, the remaining Phases of works in the Autumn should be carried out under temporary Traffic Lights before a final short Road Closure is required in order to transfer between the existing Road and the new Realigned Road.
LBH and HS2/SCS confirm the Full Road Closure will be from Mon 12/06 until Sun 09/07 in the section between the Dogs Trust and the Bridge by Skip Lane.

While the Road Closure is in place by the Dogs Trust, there will also be 4-Way Traffic Lights between HS2 Gate 1 and Skip Lane to allow Affinity Water and BT works near the Certas Oil Depot. Any other works that can be carried out by HS2/SCS while the Road Closure is in place will be encouraged, in order to maximise the amount of work undertaken during the Closure.

In Summary – This work will consist of 2 Parts; a Full Road Closure by the Dogs Trust, and 4-Way Traffic Lights between HS2 Gate 1 & Skip Lane junction.

Part 1:
o Mon 12/06 to Sun 09/07 – FULL ROAD CLOSURE
o Location – Dogs Trust to Skip Lane Bridge
o Utilities and Civils ties ins for new road
o Activities: Water Main installation, Diversion of existing Utilities, Highway & Drainage Construction, Existing Road Demolition, Resurfacing, Kerb Installations and Road Markings

Part 2
o Mon 12/06 for approx. 2 weeks – 4-Way Traffic Lights
o Location – HS2 Gate 1 to Skip Lane junction
o Affinity Water Hydrant works & BT works