Back in 1992, they decided to build a tunnel over the Ufa River. In 2008, the inspection resolved to introduce changes into the construction documents and then, to continue the construction. At present, it is completely frozen; estimated date of completion of the construction is 2020.
A central shaft. It is also the only one, by the way.
The entry-driving machine 1GPKS-01.
A tunnel over a river is a bridge…
Happens to everyone.