“RPI KurskProm” LLC produces preassembled modules for superstructure launching for bridges of any size (analogical to the preassembled modules that are produced by the leading companies such as “Gumwa, “Ebershpecher”, etc.). The preassembled modules with fluoroplastic (teflon) coating have anti-friction characters and work as the plane bearing and may be used for replacing the bridge constructions, heavy loads, boat ramps, etc.