Severomuysky Tunnel

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Severomuysky Tunnel (Russian: Северомуйский туннель) is a railroad tunnel on the Baikal Amur Mainline (BAM), in northwestern Buryatia, Russia. It is named after the Severomuysky Range it cuts through.

The tunnel's length is 15,343m (9.5mi) and it is the longest tunnel in Russia (excluding metro lines, see List of tunnels by length for comparisons). The construction started in 1977. The tunnel was put into operation on December 5, 2003^[1] (signed off on November 30^[2]^[3]), with yet another announcement of the completion of the BAM project.

Previously, the corresponding route was 54km long and passed through zones of avalanches and steep slopes that required an extra locomotive to pull a train.

The final connection ("golden join") happened on March 30, 2001, and the first train was passed through in December 2001.