Prefabricated rail base unit consisting of a plurality of projections and a single continuous slab

A railroad bed assembly for supporting thereon metallic railroad tracks comprising a base structure consisting essentially of reinforced concrete formed from a plurality of adjacently located prefabricated blocks, said prefabricated blocks including a slab section installed over a ground formation at a railroad bed site and at least two upwardly extending projections running transversely to said tracks each having a trapezoidal cross sectional configuration taken in a plane extending parallel to said tracks, said at least two projections and said slab being integrally formed of reinforced concrete with said at least two projections forming cross ties for supporting said tracks thereon, said slab being formed as an essentially solid continuous body between said projections, said projections having embedded therein attachment devices, said tracks being arranged to directly overlie said trapezoidal projections and being connected thereto by mechanical fastening means in gripping engagement with said tracks and connected with said attachment devices in order to hold said tracks directly on said trapezoidal projections.