Luzhniki Metro Bridge

Luzhniki Metro Bridge (Russian: Лужнецкий метромост), also known as Metromost (Метромост), is a concrete double-decked (two-level) arch bridge carrying a road and a Moscow Metro line across the Moskva River in Moscow, Russia.

The bridge houses Vorobyovy Gory, the only station of Moscow Metro located over water.

[1] The bridge builders used salt to speed up concrete hydration; in 1959, it was commissioned with incomplete moisture protection.

In the following years, aluminium and steel parts of the station hall started falling apart, hiding far worse corrosion processes inside the concrete structure.

Once the arch was reinforced, in 1999, the builders demolished the automobile road deck and the columns that carried it.