Impossible Engineering - Season 3 - Eps 5: Mega City Railway
Uncover what it took to build one of the most ambitious rail projects in history, London's Crossrail. This staggering feat will span over 73 miles and transport 200 million people a year around one of the world's largest and busiest cities.
About Impossible Engineering

Title: Impossible Engineering
First Air Date: 2015-04-13
Last Air Date: 2021-09-01
Status: Ended
Rating: 6.7/10 (from 15 votes)
Language: EN
Seasons: 11
Total Episodes: 82
Network: Science
Genres: Documentary
Production Companies: Twofour, Powderhouse Productions
Synopsis
Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionised their field. Each episode details how giant structures, record-beating buildings, war ships and spacecraft are built and work. As the show revels in these modern day creations, it also leaps back in time to recount the stories of the exceptional engineers whose technological advances made it all possible.
Cast

Mike Bratton
Narrator