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KITTITAS COUNTY <br />DEPARTMENT OF PUBLIC WORKS <br />Formal Task Order Document <br />(KPFF) <br />Task Order Number 004 <br />Maximum Amount Payable _....:.$_9_9't-2_5_9 _ Completion Date -------12/3112017 <br />The general provisions and clauses of Local Agency Agreement Number (KCPW 2017- <br />19ENG2) shall be in full force and effect for this Task Order. <br />Location of Project: All Kittitas County Bridges <br />Project Title: SHY Load Ratings <br />Description of Work: In accordance with FHWA direction for Load Rating of Specialized Hauling <br />Vehicles (SHV), Kittitas County is required by Federal and State mandates to update existing bridge load <br />ratings records with SHV load ratings on the appropriate schedule. The Consultant in Task Order 3 <br />reviewed the County's bridge inventory and identified which bridges require updated load ratings by <br />12/31/17 and which ones need updated load ratings by 12/31/2022 using the WSOOT Load Rating Flow <br />Chart for Specialized Hauling Vehicles (Feb 2014). The Consultant concluded that the County has a total <br />of 114 NBIS bridges which are longer than 20 feet and thus are required to have a documented load <br />rating analysis or report on file . Forty-eight (48) of these bridges have been determined to require <br />updated load ratings in 2017. Thirty-six ( 36) of these will receive an Administrative Load Rating and <br />twelve (12) will be a Calculated Load Rating . A summary of the Task 3 effort is attached for reference. <br />A Colculated Load Rating is a load rating analysis in which sufficient structural details regarding the <br />primary superstructure components can be gleaned from either field measurements or historical <br />documents, such as bridge plans or calculations, to support direct and accurate structural analysis and <br />capacity determinations. The bridge's current condition is considered in the capacity reduction factor. <br />Calculated load ratings will follow procedures in the WSOOT BOM and AASHTO MBE. Each bridge will <br />receive a site visit by the Engineer to ensure the documented condition in the Inspection Report <br />conforms to the condition today based on the opinion of the Load Rating Engineer. <br />An Adm inistrative Load Rating is performed only on concrete bridges where design, shop, or as-built <br />plans detailing the reinforcement do not exist . Steel and timber bridge structural components can be