The Secret $5BN Tunnel Under London

We'll never grow tired of stuff like this. The most incredible infrastructure projects are the ones that enable us to live our lives - from the most fundamental of levels - while being completely out of sight, out of mind and largely taken for granted 👌🏗

Reminds me of that classic story of the man hired to make London’s new Victorian Era sewer pipes. He wisely made them several times the diameter they needed, anticipating growth. He alone saved untold millions in future money. Edit: oh, was it Joeseph Bazalgette?

I can never stop admiring the intelligence and planning skills of the 19th century (and Pre-WWII 20th century) engineers and architects. Almost every B1M video shows the incredible computer systems and massive databases used today for big projects. Bazelgette and his peers only had pen and paper.

This Channel never disappoints! Keep it going guys!

Never apologize for covering not-so-glamorous topics like this. Every now and then people need reminding, that there are awesome people in the world, dealing with the stuff that most people wouldn't.

Quite a lot of the UK’s sewer systems need infrastructure upgrades like this

I heartily applaud you for managing to use the word “feculent” 👏🏼 it’s just one of those words that’s hard to wiggle into any conversation! 🥳

This is very important topic all around the world. We need to know more about these projects.

Should improve London dramatically,cheers Fred 👍

The real time mapping for engineering is very impressive to me.

Due to EPA mandate, Combined Sewer Overflow (CSO) projects are being implemented all over the USA for all sizes of cities. In Indiana, communities with CSOs were required to develop and implement what is referred to as a Long Term Control Plan, or LTCP. Control strategies that are aimed to significantly reduce or eliminate raw sewage discharge to the rivers and streams primarily include either reduction strategies (e.g. separating sanitary sewers from storm sewers, installing green infrastructure, etc) or storage/treatment strategies (e.g. inline or offline storage followed by wastewater treatment). The ecological, recreational and cultural benefits over the next 100 years are going to be quite impressive.

Would love to see all the tunnels in Liverpool mapped like that.

"from the channel that takes you in some of the biggest sewers, hit that subscribe button" 😂😂😂😂😂😂😂😂😂😂

Thank you for once again providing pertinent information. Well done.

I worked on the Thames Tideway Tunnel helping to put the hand drawn diagrams of sections of the Thames wall into a computer system. It was for 1 week of work experience. The sections where next to all the vertical holes to be made as we needed to make sure the wall would not collapse and flood the project!

We could actually start and clean the river this way! Invest in this, seems like a great idea. We might see the thames clean in a few years!

Just came back from London and I love to see that you’re covering it right now.

I roofed and cladded the acoustic shed at nine elms and Putney, what great project with top people.

Portland OR did a smaller scale version of this and the results have been spectacular with the river now safe for swimming and recreation. This project will greatly benefit London for decades.

That was interesting to watch. That topic is so important to the life of a city and it's occupants. At least there is work going on to take care of it.