News on HS2 in Hillingdon

We are creating two new site entrances and building crossing points for a haul road on the A412 near Denham Water SkiClub on Moorhall Road. This work is in preparation for the creation of a new haul road to support the construction of the Colne Valley Viaduct.

In order to carry out this work we need to put in place a full road closure on the A412 road between 21:00 on 6th and 05:00 on 9th November

For full details on the works and closure, including a map of the diversion route, see our notification here .

This work is being undertaken at weekends to reduce disruption and for the safety of the public. Electronic traffic signs have been in place on the A412 for four weeks to provide updates for road users and will remain in place until works are complete.

We have coordinated these works with the local highway authorities so that a number of utilities services are being diverted in the same location at the same time. Over the next two weekends two new bell mouth entrances are also being constructed which will form our future haul road crossing.

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email hs2enquiries@hs2.org.uk .