Feasibility study of developing and creating a standardized subset of bridge plans.

PDFTech ReportCDOT-2015-06214.01Feasibility analysisBridge designPrefabricated bridgesBridge constructionPlans (Drawings)StandardizationImplementationCostsColoradoColorado. Dept. of Transportation. Applied Research and Innovation BranchMcMullen, MichaelLi, ChengyuAtkins North AmericaUnited States. Federal Highway AdministrationUS Transportation CollectionThis study investigated sizes and geometry of existing bridges in Colorado and investigated standard bridge systems used byother entities. The study proposed standard bridge types advancing the goals of SHRP 2 R19A & B, the rapidest ABCconstruction, and encompassing a wide range of span and structure lengths and widths, with the capability of a wide range ofskews while preserving, to the extent possible, simplicity, low construction cost and a competitive contracting environment,in order to achieve the largest practical benefit to Colorado\ue2\u20ac\u2122s bridges over the coming decades. For Colorado these are pre-decked simple made continuous precast girders, and shaft and precast cap substructures, all made integral with detailsemulative of CIP construction. These are made practical by an effort to control camber and camber variations by design andby monostrand post-tensioning camber adjustment.Implementation is planned to be progressive, starting from worksheets for standard superstructures and substructures inconjunction with prototype structures, expanding to encompass more acute skews, and finally, additional worksheetsincorporating the design information to accommodate the full range of anticipated structure types, spans, span arrangements,and skews without additional detailed structural design or details for each individual bridge element. At this time, a worksheetcan be developed to allow simplified presentation of the desired structure. Minor organizational changes are proposed toensure continuity of the development and maintenance of these worksheets. Rough estimated implementation costs and valueof benefits are included