Precast concrete bridge unit and headwall assembly and method of production
(10) US 2016/0376756 Al
(22) 26.06.2015
(43) 29.12. 2016
(57) A method of producing a precast concrete bridge and headwall assembly, includes the steps of casting a reinforced concrete bridge unit having a top wall connecting opposite side walls, releasably attaching a series of counterfort forms to the top wall of the bridge unit at laterally spaced intervals between the side walls, and positioning the bridge unit with a first side supported by a horizontal casting surface, wherein the top wall is positioned adjacent a casting framework and a bottom edge of the counterfort forms is located...
