Analytical review showed that duringthe long term of operation of reinforced concrete structures of hydraulic tructures, their individual elements, such as reinforcing rods, are destroyed due to insufficient fatigue and corrosion resistance of the metal of the reinforcement. They arise mostly under the action of the main variable loads - bending, vibrations of reinforced concrete slabs, mechanical and erosive actions of the environment.The main reasons for the destruction of reinforcement are its rupture and wear as a result of repeated action of force factors. The surface zone of the reinforcement in the connection with concrete is especially intensively destroyed due to weak bondstrength. One of the reasons for the destruction of reinforcement joints with concrete can also be the use of low-strength reinforcing steels. An increasein the corrosion-mechanical reliability of reinforced concrete structures of hydrotechnical structures is possible due to the use: for the manufacture of reinforcing rods, which are the main strength structure of reinforced concrete, economically modified alloy steels that undergo complex heat treatment and arecharacterized by high corrosion-fatigue properties when working in aggressive environments with cyclic ( sign-changing) loads.The studied resistance against SCRN, VIR and corrosion-mechanical fatigue of reinforcing steels intended for the construction industry. It was established that experimental steels economically modified with REE, copper, nickel, especially chromium, niobium, and vanadium meet the requirements of the International Standard NACE MR0175-96 in terms of chemical composition and mechanical properties, and steels of grades 10ХСНДАand 20Ф do not have a sufficiently high resistanceof the SCRN (limit stresses < 0.8 ∙σ0.2min) and corrosion-fatigue failure, and steel grades 20F and 06G2B showed low VIR resistance (CLR > 6% and CTR > 3%). Therefore, a full (100%) input controlof the corrosion-mechanical resistance of all materials involved in the production of reinforced concrete structures for hydrotechnical purposes for operation in hydrogen sulfide-containing environments should be carried out.