Rail support plate and related system

A rail support plate for use in a rail support system. The plate has an open slotted hole on one side and a hole on its other side. This plate is placed over a set of opposed holes in a support structure. One of these opposed holes has a fixedly secured anchor bolt that can be easily engaged by the open slotted hole of the plate. A securing bolt is inserted into the hole of the plate and into the aligned hole of the support structure. This arrangement permits easy removal and/or addition of a rail support plate from underneath a rail without the need to remove the rail from the support structure. Several rail support plates can be used along the length of the rail whereby the anchor bolts are arranged in a staggered pattern relative to the other.