a significant advantage of the present invention is that once the point for the holes 24 is determined the engineering work is essentially complete and a construction crew can complete the bridge erection this set point controls the height elevation slope bank and all other facets of the construction of the present bridge assembly this factor combined with the use of a plurality of standardized components significantly reduces the cost of the bridge construction with overall savings of as much as eighty percent being realized with the temporary support means 20 in place the tops of the piles are then trimmed so as to extend approximately eight inches above the top level of the support means a platform means 26 is then placed around the piles resting on the channels 20 the tops of the piles are then drilled forming holes 28 and a plurality of reinforcing means such as rods 30 are placed in the drilled holes and grouted to secure them in place a unitary cap means or bent 40 is then placed over each laterally extending row of piles as best shown in fig5 the bent rests on the platform means 26 and consequently on the channels 20 which as noted are designed to pivot to accommodate the designed superelevation of the bridge assembly the bents are formed of precast.