After the construction of the new tunnel, which was commissioned in 2008, the old Korshunovskiy tunnel was closed for reconstruction. Now the area Tayshet — Lena Baikal-Amur Mainline railway traffic through the tunnel is carried out both ways.
The tunnel, which serves as the railroad in 1973, repaired on the model of the modern. Its length is 950.5 meters in the period of reconstruction the old lining the tunnel was completely destroyed, a new built using advanced technology watertight construction. This will significantly reduce corrosion and extend the life of the construction.
So on VSZHD are two of the most advanced in quality of construction and the level design of the tunnel "Russian Railways". As long as they do not have analogues on the entire railway network. Capital expenditures for reconstruction amounted to 2.8 billion rubles.