A Red Kite photobombed the shot at bottom left corner 3:28

Yes, good going and soon Dom will be complete.

Looks like you were there just hours after SIMONC, QM. The temporary peg-leg platform for stump number -3 seems to be pretty much in place. Nice work. Keep 'em coming 👍

No frames outside the viaduct factory means they must have already cast the final segment . This is, indeed, a cause for celebration +Fires off a party popper and takes a glug of cheap cider+ Nice one, QM ... Keep 'em coming 👍

Great video. With the completion of the tunnelling, the slurry plant has been demolished and work should be underway on the tunnel lining factory and storage area. Last to go will be the viaduct sections factory. The whole site is now being landscaped and, on completion, it will be more of a natural landscape than before as an old quarry has been filled in with the tunnel spoil.

wow that really is a nice bridge. Curious though why they are not using the same style throughout hs2 line. Especially the bridges used within Birmingham City, they look very old fashioned.

Nice footage, QM. You've captured the British 'summer' in all its glory. Looks like there has been some more Perspex action over Moorhall Road since your last visit. Keep 'em coming ... 👍

Straightest bit of the line does the HS stand for how slow it will be compared to high speed railways around the world 😮

Here is magnificent architecture and engineering, whether or not you agree with HS2 and it's crazy 'management'

Thanks for posting all this detail of the 'architectural language' that is used throughout the Viaduct.... nice...👍👍👍...

This looks delicious.

Wot is this like on a train window then as you past this area too Breakspear Rd

Oh look ancient woodlands and nature don’t seem to be destroyed by this viaduct, pity they did not take this attitude with the rest of the line….

That looking good.

Great drone footage and amazing aerial view. 👍👍👍Thanks for sharing. 👍👍👍

Great drone footage and amazing aerial view. 👍👍👍Thanks for sharing. Subbed and Liked. 👍👍👍

Missing Dominique.

Interesting footage as ever, QM. At 1:01 we can see where the Colne was subtly realligned to make way for pier number whatever.

HS2 will cost not much more than test and trace , wonderful infrastructure v billions into private companies pockets , I know which one is better value. Thanks.

The design of this bridge is so cool...kinda like when you toss a rock on the surface of the water and it bounces.

That's a big kit of bits to be used as a jetty somewhere else I wonder...?...

Thanks.looking good. It looks as if the work to remove the temporary staging and eventually the haul road has started.

Oh i say well well well the first acrilic panel in postion 🎉🎉, this must be a test piece to see how it looks??, lovely 🌹

Why is this tunnel being built ? It seems a rather extravagant bit of engineering to me, just to hide a railway.

Are they keeping the service road, because it would make a great cycle and walking route

That's bloody brilliant, looks like a road through the Everglades

It's looking good. I make it 6 piers to go sso about 3 months work. Thanks.

The Colne Valley Viaduct has a pronounced curve. What is the track design speed through the curve and what is the expected operating speed? It doesn't appear to be 320 kph 200 mph curve.

Are you able to comments on the screen, eg the detailed locations etc...

Is the viaduct wide enough for two sets of tracks?

What an absolutely stunning work of engineering. Great, GREAT footage.

What is the conveyor moving ? Where does it start? It would be interesting to see further south, it looked like rail sidings and tunnel segment storage.

Unusual but interesting footage, QM. That's a lot of 'stuff' that needs to come on site for the embankment, presumably from the west. Have they been hoarding it somewhere? Nice to see the ULEZ-compliant conveyor in greater detail. Keep 'em coming 👍

Love the scale of the huge bridge built to traverse the tiny little dribble that is the River Pinn this time of year.

Thanks for that. It's wierd seeing bridges like that before the embankments are built. I remember seeing some on the HS line between Tours and Bordeaux near where we now live back in 2013. The trains started using the line in 2017.

The Colne Valley viaduct is a seriously beautiful structure. Such a shame it's all such a colossal waste of public money!

Burying the railway in a cut-and-cover tunnel to protect a... car park and warehouse? One of many examples where NIMBYs and over-cautious design mean massive cost increases on HS2.

...but why has the viaduct sidewalls? The train-passengers would like to have the view of the countryside.

The noise barriers on the CVV are at varying heights and materials (solid vs transparent) at different points depending on the required noise performance. From memory, the ones on the west side at the northern end needed to be of more "taller and solid" design due to the proximity of some buildings.

Seems like a still photo.

Interesting video, not seen much south of the big viaduct

Certainly looks sharp ❤

Yes, QM. It does appear that the acoustic barrier is lower on the lake side. I'm guessing this is to provide any future travellers with a better eyeball on the water world below them before, after 38 seconds, they are plunged back into darkness via the Copthall and Northolt tunnels. If they don't blink for a few seconds they might catch a glimpse of the Breakspear Arms and River Pinn. Hopefully the perspex that goes on top of the acoustic barrier will provide a level finish to the whole thing. Early on in your video, it looks like huge quantities of topsoil are being spread over the chalk. Who knows? Next time you visit that area there might be picnic tables set out. Keep 'em coming 👍

Great drone footage and amazing aerial view. 👍👍👍 Thanks for sharing. Subbed and Liked. 👍👍👍

HS2 - R.I.P

Still find that viaduct construction mind blowing, precision engineering. And it looks great! Thank you for capturing this moment in history cuemaster

Hello✋, ooh aah those white blocks at 1:32 , insulation? i thought they had finished the first one, its getting bigger,larger and more massive , when will it end , thanks for the update..

Nice one, QM. Why do they need so many airholes on such a short stretch of tunnel? There are the same number, four, along the whole 10 mile length of the main Chiltern Tunnel. Keep 'em coming 👍

Great drone footage and amazing aerial view.👍👍👍 Thanks for sharing. Subbed and Liked. 👍👍👍

Interesting footage as always, QM👍 At 4:20 we see the parapet sections lined up ready to go. In your previous video at 1.17 we can see sections lined up on the London side. I can find no visual evidence of these sections being manufactured on the Western Slopes site and, call me sad for being such an HS2 nerd, can't find any reference online for who was awarded the contract to produce them or where they come from. They are, after all, an integral part of the finished article. If they ARE produced on site it would mean the pile at the London end has been bussed round from Chalfont Lane because, as evidenced by Peter the Rock's video from under the Grand Union span, there is and has never been a haul road over the canal. The viaduct became the haul road once the canal had been bridged - not much use if you're simply trying to get parapet sections from the Western Slopes area to the shore of Harefield No.2. Keep 'em coming ...