Abstract: A multi-rail system and method of installation wherein an additional load carrying rail assembly is installed in centered relation between the rails of a conventional railroad and secured by a first set of tie plates joined to existing ties and a second set of tie plates joined to cement anchor columns located between selected ties, both sets also being joined to the existing rails; the system further including load carrying wheels engaging the additional rail assembly and supplementing the conventional car wheels, the railroad cars also provided with supplemental brakes engaging the additional rail assembly to increase the braking force, and retainers extending under the additional rail assembly for preventing excess movement of the auxiliary wheels from the additional rail assembly.