本科生毕业设计（论文）外文翻译（2009届）题目Ⅰ：EstimatingFutureHighwayConstructionCosts2009年2月19日EstimatingFutureHighwayConstructionCostsC.G.Wilmot,M.ASCE,1andG.Cheng,P.E.2Abstract:TheobjectiveofthisresearchwastodevelopamodelthatestimatesfuturehighwayconstructioncostsinLouisiana.Themodeldescribesoverallhighwayconstructioncostintermsofahighwayconstructioncostindex.Theindexisacompositemeasureofthecostofconstructionlabor,materials,andequipment;thecharacteristicsofcontracts;andtheenvironmentinwhichcontractsarelet.Futureconstructioncostsaredescribedintermsofpredictedindexvaluesbasedonforecastsofthepriceofconstructionlabor,materials,andequipmentandtheexpectedcontractcharacteristicsandcontractenvironments.Thecontractcharacteristicsandcontractenvironmentsthatareunderthecontrolofhighwayagencyofficials,canbemanipulatedtoreflectfuturecost-cuttingpolicies.ApplicationofthemodelinforecastingtohighwayconstructioncostsinLouisianashowsthatthemodelcloselyreplicatespastconstructioncostsfortheperiod1984–1997.Whenappliedtoforecastingfuturehighwayconstructioncosts,themodelpredictsthathighwayconstructioncostsinLouisianawilldoublebetween1998and2015.Applyingcost-cuttingpoliciesandassuminginputcostsare20%lessthananticipated,themodelestimateshighwayconstructioncostswillincreaseby75%between1998and2015.Keywords:Highwayconstruction;Costs;Estimation.IntroductionStateDepartmentsofTransportationarerequiredtopreparehighwayconstructionprogramsthatdescribetheirplannedconstructionactivityintheshortterm.Thereisusuallyconsiderableinterestintheprogramfromlocalauthorities,politicians,andinterestgroups.Draftprogramsaretypicallypresentedtothepublicandtovariousagenciesatthelocal,regional,state,andfederallevelforcommentandreview.Ultimately,aprogramwillbeapprovedbythestatelegislatureandwillbecometheformalprogramofconstructionofthestateDepartmentofTransportationuntilanewprogramisdevelopedinthenextcycleafewyearslater.Becauseindividualprojectsareofconsiderableimportancetopoliticiansandindividualin