Road tunnels on the highway: Frunze (Bishkek) - Osh
The project design of construction, engineering operating systems, development organization and the underground operations technology for the highway tunnel, bypassing the city of Tash-Kumyr (length  289 m), located on the left bank of the Naryn river, transport tunnels at the site of Kurupsaiskaya HPP  and two road tunnels on the stretch of road, linking the
construction sites of Kambaratinskaya HPP-1  and HPP-2.

The project adopted a lightweight lining of reinforced spray concrete, strengthened with anti-seismic zones.

1975 - 1981.

Underground structures of various application, Chief Project Engineer -L. Levin.