Mostotrest is a transport infrastructure construction company. It is the first integrated diversified infrastructure holding in Russia and the largest building company in the Russian Federation by revenue for works conducted in-house, according to independent industry consultant EMBS Group. The company was founded in 1930 under the name of the All-Soviet Trust for the construction of extra large bridges «Mostotrest». To date the company has completed over 7,500 bridges, foot bridges, tunnels and complex transport interchanges.

The company specialises in building and reconstruction of bridges, highways, airfields, and water infrastructure facilities including marine and shore structures and berth facilities, as well as other engineering constructions; providing services in maintenance, repair and toll-based operation; and investing in infrastructure projects.