The first line was built in a trench method. It was as follows: a huge moat broke up, rails laid along it, brick arches were built over them, and then the moat fell asleep. Part of the rails, as was said, passed through the tunnel laid by Mark Brunel.
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This method of construction was, firstly, quite time-consuming, and secondly, the builders came to what they initially wanted to avoid: they had to demolish some buildings and other infrastructure facilities on the central streets of London. During the construction of the “subway”, the movement in the center of the capital was completely blocked, which aggravated the already difficult transport situation.
But the results justified all the difficulties. The London metro began to be very popular very quickly: the passenger flow in the first year was 26 thousand people a day. Metro was the fastest transport in the city. People did not even stop people that it was very smoky underground: the first trains worked on steam traction. Such a wide demand for the metro led to the fact that already in 1864 the underground railway system began to expand. Now, of course, other companies have taken up the case.