This is great, although I slowed it down to playback .25speed, since I just wasn't able to get a grasp of what was going on at your posted time-lapse speed. Completely blew-my-mind when the entire structure moved to the right!!! Sure didn't see that coming! ...Enjoyable video, thanks for sharing it.
Che dire complimenti, 🎉🎊 ottima tecnica, qui avrebbero interrotto la linea ferroviaria per anni e poi avrebbero scavato e fatto tutto il resto... ovviamente li bisogna quantificare i costi aziendali di cantiere di costruzione e sovrapporli con i costi della azienda ferroviaria, aggiungendo i disagi dei viaggiatori... ma qui in Italia contano solo i costi delle aziende costruttici!!!
Being relatively local to Filton and Patchway, I've just commented on the Filton Bank Blockade time lapse and asked whether the forthcoming replacement of Gypsy Patch Lane bridge might also be getting similar treatment. In respect of the replacement of the Gypsy Patch Lane bridge, I have been told it is a requirement that the line, which is the main line to south Wales, can only be closed for a maximum of eleven days. In answer to the comment that what we see here was a very expensive way of building a bridge, I must assume that a similar constraint was placed on the work.
Further to my previous comment, I've been puzzled by the title of this video. as I believe it shows the construction of a new bridge to take the A4174 South Bristol Link Road under the Great Western Railway main line between Bristol and the south west. In this case, minimal closure time of the line would have been a primary requirement of the contract. This should answer once and for all the critical comment made about the expensive manner of construction.
unclear, but this was part of constructing the south Bristol link road, the entire project cost £45m - I couldn't say how much was spent on this section.
@@xaiano794 I think £45m for this crossing is fair cost. See for comparison (Appendix G): sp.mdot.ms.gov/Environmental/Projects/Current%20Projects/District%201%20and%202/Tupelo%20Railroad%20Relocation/Feasibility%20Study/Volume%20I%20-%20Report/Appendix/Appendix%20G.pdf
Manuel Lezámiz Santos se llama timelapse y está hecho con fotos tomados cada 30 segundos. Se juntan y se forma lo que vos llamas video. No es una filmación
Well, when you consider that they had to create the tunnel under an existing railway, and had to keep the amount of time that railway could be unusable to a minimum, which required them to build the new bridge in situ and then slide it over into place, and also perform all of this construction adjacent to a much older tunnel/bridge and not damage them - it really doesn't sound that simple in the end 😉
i couldn't work out what they were doing. after watching the whole thing it became obvious. then my brain started devising all the other ways this could have been done. moving all that dirt would have been a great percentage of the cost. if engineers spent more time on tools, or any time on tools, before graduating, they might have devised any of the better ways to do this job.
@@johnm2012 ,i had to watch it again to remind me why i made the comment. that massive amount of dirt that was moved in to provide a stable base for the slide-in indicates to me that there are going to be many different ways to do this while maintaining traffic on the lines. so i wouldn't do that slide-in bridge. how about a single section placed next to the line on whatever sort of temporary support after the abutments have been done. then a big dig out of one existing track and base just enough to slide or lift the new piece in. and another thing use bigger excavators. they move more dirt faster. i'd do the new bridge section in steel only. then put the new section of track straight on it. then do the other side. it sounds easy from my armchair. a useful piece of equipment that anyone who does this sort of stuff needs to know about is called a "non-intrusive crossover". they're made in scotland. its patented but i have reason to suspect it is a repackaged old idea probably not worthy of a patent. if the slide-in was to bugger up and couldn't be completed overnight then the "nic" could be used temporarily to maintain services. call it the plan b that every engineering job requires. but omg, all that dirt!
Probably an amazing achievement, but a pity that the video did not do it justice, I simply could not follow what was going on the video was so bity and fast I jut got lost. A great disappointment, but well-done lads the new bridge looks great, pity I could not follow it's development.
Windgonner - really? You really think they make footpaths up to the tracks when they've just built a new underpass and there is bow a spare underpass right next to it?
He was going back and forth to each side of the bridge as work shifted from side to side. Would be kind of boring watching the other side of the bridge being worked on with the rail line in the way. The camera changes certainly weren't gratuitous.
And THIS was the ONLY way to build it? The span is barely 20 meters IF THAT! Building a huge mountain just to slide it instead of building it like normal people do was a VERY expensive idea. And pretty much unnecessary unless there's more to the story.
Here is your "more to the story": Do it the "traditional way" and you have to close down that railway line for weeks, if not months. This way you're down to a handful of days at most. And shutting down an important transport axis for an extended period of time is going to cost a lot more than the additional construction expenses. It is pretty simple, actually.
it only took that long because they were having to build the bridge beneath an active railway line - it would probably cost 5 times less to simply shut down the line and dig the stretch out, you could likely have it built in a couple months, but because our rail network is so overcrowded we can't close a line like this for a couple of months so we instead have to build it like this.
I agree. I saw them put a 4 lane freeway under an active railroad and they did not build a pile of dirt to do it. They dug under the tracks while temporarily supporting the tracks and then build the supporting bridges. No waste of adding dirt just to remove it again.
@@adelesexton5975 to install the temporary bridge structure underneath the tracks requires shutting down the tracks to do it, I don't think you realise how much traffic uses UK railroads - where in the US you're talking about 4-5 trains per day, in the UK it can be as many as 30-40 trains per hour on most main routes (and yes that's 2-track)
If you a bus replacement for 3 weeks to replace the bridge people would lose their mind. If this was China, they would have just shut the thing down and done the job. Unfortunately in blighty you have to appease the voters.
@@xaiano794 You also have to consider that the cost of shutting the railway and the lost revenue associated with it would likely cost more than the extra cost involved in a scheme like this. Cost, speed, quality, pick two. You can have a quality structure with minimal disturbance but it will be expensive. You can have a cheap, high quality structure but you'll have to shut the railway down for months. You can have a cheap, low disturbance structure but it will be low quality. People will complain In any situation. If you don't maintain a structure or add/improve infrastructure people complain. If you close down infrastructure to maintain or improve it people complain. If you find a way of maintaining or improving infrastructure with minimal interference people complain that It costs too much.
I like that the old underpass was not destroyed.
Great for pedestrian path.
Very enlightening on the great engineering works carried out on our rail network
Great time-laps video, amazing background music.
Amazing feat of skilled civil engineering!
A bridge built from the top down.
An engineer’s retirement scheme.
This is great, although I slowed it down to playback .25speed, since I just wasn't able to get a grasp of what was going on at your posted time-lapse speed.
Completely blew-my-mind when the entire structure moved to the right!!! Sure didn't see that coming! ...Enjoyable video, thanks for sharing it.
Outstanding. (Mississippi gulf coast USA)
Che dire complimenti, 🎉🎊 ottima tecnica, qui avrebbero interrotto la linea ferroviaria per anni e poi avrebbero scavato e fatto tutto il resto... ovviamente li bisogna quantificare i costi aziendali di cantiere di costruzione e sovrapporli con i costi della azienda ferroviaria, aggiungendo i disagi dei viaggiatori... ma qui in Italia contano solo i costi delle aziende costruttici!!!
Being relatively local to Filton and Patchway, I've just commented on the Filton Bank Blockade time lapse and asked whether the forthcoming replacement of Gypsy Patch Lane bridge might also be getting similar treatment. In respect of the replacement of the Gypsy Patch Lane bridge, I have been told it is a requirement that the line, which is the main line to south Wales, can only be closed for a maximum of eleven days. In answer to the comment that what we see here was a very expensive way of building a bridge, I must assume that a similar constraint was placed on the work.
Expensive you say, that'll be standard proceedure for Kier, so the job over runs and they lose money.
Fantastico!
Love the engineering!
Excellent job and excellent video.
Thanks Warren
Further to my previous comment, I've been puzzled by the title of this video. as I believe it shows the construction of a new bridge to take the A4174 South Bristol Link Road under the Great Western Railway main line between Bristol and the south west. In this case, minimal closure time of the line would have been a primary requirement of the contract. This should answer once and for all the critical comment made about the expensive manner of construction.
sure looks like it from Googlemaps
Was I the only one left clueless in confusion on what was going on, till they slid the bridge under the track?
No you weren't 😔
never leave these orange suits alone for one minute....
Nice
cool
If that was Kier on the job I expect the project over ran by 18 months like the A30 Temple bypass down in Cornwall 😀😀😀
That underpass is going to fill with water during rain storms ... mark my words ...
God okeh kerjane cepet banget ya
is that a bridge i see on the right???
I think that's pretty clear. Why do you ask?
👍
How many days or years it took to complete the project. ?
# Excellent Engineering & # Excellent Engineers. 😀
Tech Daily its already in the caption. . 12 months
@@Tropicalpetlandchannel Ops.....🙄
😲
wonder how much this cost
unclear, but this was part of constructing the south Bristol link road, the entire project cost £45m - I couldn't say how much was spent on this section.
@@xaiano794 I think £45m for this crossing is fair cost. See for comparison (Appendix G): sp.mdot.ms.gov/Environmental/Projects/Current%20Projects/District%201%20and%202/Tupelo%20Railroad%20Relocation/Feasibility%20Study/Volume%20I%20-%20Report/Appendix/Appendix%20G.pdf
@@nkondrashov you misunderstood @xaiano - the whole project, not just this piece of it, is £45m - I would take a guess at £3 - 4m
12 months???? Jesus.
Where is this?
Working
I think it's in the UK, because that train that I saw seems British
Yes, it's near Bristol
3 mins of trying to figure out what's going on with the bridge. Over pass? Under pass? Now I see!
Om
The train should go underground next time
All this for a small crossing
@jujitsuman68 lol
like
Velocidad excesiva para ver un buen vídeo. Esto hace bajar mucho la calidad del mismo!!!!!
Manuel Lezámiz Santos se llama timelapse y está hecho con fotos tomados cada 30 segundos. Se juntan y se forma lo que vos llamas video. No es una filmación
RIP natural habitat.
12 months to make a simple tunnel
Well, when you consider that they had to create the tunnel under an existing railway, and had to keep the amount of time that railway could be unusable to a minimum, which required them to build the new bridge in situ and then slide it over into place, and also perform all of this construction adjacent to a much older tunnel/bridge and not damage them - it really doesn't sound that simple in the end 😉
i couldn't work out what they were doing. after watching the whole thing it became obvious. then my brain started devising all the other ways this could have been done. moving all that dirt would have been a great percentage of the cost. if engineers spent more time on tools, or any time on tools, before graduating, they might have devised any of the better ways to do this job.
I'm curious to know how you would have done it better, given the same constraints.
@@johnm2012 ,i had to watch it again to remind me why i made the comment. that massive amount of dirt that was moved in to provide a stable base for the slide-in indicates to me that there are going to be many different ways to do this while maintaining traffic on the lines. so i wouldn't do that slide-in bridge. how about a single section placed next to the line on whatever sort of temporary support after the abutments have been done. then a big dig out of one existing track and base just enough to slide or lift the new piece in. and another thing use bigger excavators. they move more dirt faster. i'd do the new bridge section in steel only. then put the new section of track straight on it. then do the other side. it sounds easy from my armchair. a useful piece of equipment that anyone who does this sort of stuff needs to know about is called a "non-intrusive crossover". they're made in scotland. its patented but i have reason to suspect it is a repackaged old idea probably not worthy of a patent. if the slide-in was to bugger up and couldn't be completed overnight then the "nic" could be used temporarily to maintain services. call it the plan b that every engineering job requires. but omg, all that dirt!
Didn’t do it for me
That's ok. It probably wasn't done for you
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Probably an amazing achievement, but a pity that the video did not do it justice, I simply could not follow what was going on the video was so bity and fast I jut got lost. A great disappointment, but well-done lads the new bridge looks great, pity I could not follow it's development.
Not very handicap accessible foot path.
Windgonner it’s not a footpath is an access to track. Network rail don’t tend to allow disabled people to work on track.
Windgonner - really? You really think they make footpaths up to the tracks when they've just built a new underpass and there is bow a spare underpass right next to it?
I don't think Paddy and Phantom realized you were joking.
A proper time-lapse is shot from one angle.Jumping around from camera to camera makes it confusing to watch.
He was going back and forth to each side of the bridge as work shifted from side to side. Would be kind of boring watching the other side of the bridge being worked on with the rail line in the way. The camera changes certainly weren't gratuitous.
And THIS was the ONLY way to build it? The span is barely 20 meters IF THAT! Building a huge mountain just to slide it instead of building it like normal people do was a VERY expensive idea. And pretty much unnecessary unless there's more to the story.
Here is your "more to the story": Do it the "traditional way" and you have to close down that railway line for weeks, if not months. This way you're down to a handful of days at most. And shutting down an important transport axis for an extended period of time is going to cost a lot more than the additional construction expenses. It is pretty simple, actually.
Gees! 12 months to do that.Probably cost 3 times as much as it should have too. I bet some engineer made a shitload of money from that job.
it only took that long because they were having to build the bridge beneath an active railway line - it would probably cost 5 times less to simply shut down the line and dig the stretch out, you could likely have it built in a couple months, but because our rail network is so overcrowded we can't close a line like this for a couple of months so we instead have to build it like this.
I agree. I saw them put a 4 lane freeway under an active railroad and they did not build a pile of dirt to do it. They dug under the tracks while temporarily supporting the tracks and then build the supporting bridges. No waste of adding dirt just to remove it again.
@@adelesexton5975 to install the temporary bridge structure underneath the tracks requires shutting down the tracks to do it, I don't think you realise how much traffic uses UK railroads - where in the US you're talking about 4-5 trains per day, in the UK it can be as many as 30-40 trains per hour on most main routes (and yes that's 2-track)
If you a bus replacement for 3 weeks to replace the bridge people would lose their mind. If this was China, they would have just shut the thing down and done the job. Unfortunately in blighty you have to appease the voters.
@@xaiano794 You also have to consider that the cost of shutting the railway and the lost revenue associated with it would likely cost more than the extra cost involved in a scheme like this.
Cost, speed, quality, pick two. You can have a quality structure with minimal disturbance but it will be expensive. You can have a cheap, high quality structure but you'll have to shut the railway down for months. You can have a cheap, low disturbance structure but it will be low quality.
People will complain In any situation. If you don't maintain a structure or add/improve infrastructure people complain. If you close down infrastructure to maintain or improve it people complain. If you find a way of maintaining or improving infrastructure with minimal interference people complain that It costs too much.