Preliminary Cost Estimating for Highway Construction Projects

摘要

A preliminary cost estimating procedure was developed using historical highway construction project bid data for the State of Alabama Highway Department (AHD). The preliminary cost estimating procedure developed requires only project length and preliminary engineering estimates of material quantity to calculate a project cost. This procedure has specific application in estimating future project costs for budgeting purposes. The procedure developed relied upon the fact that ninety percent of the bid total cost was comprised on one-third or less of the bid pay items. The dominance of a bid by specific pay items applies to large and small projects alike. The geographic location within the State of Alabama has a negligible effect upon the cost estimating procedure. The application of the preliminary cost estimating procedure to three distinctly different types of construction projects examined in this research confirm its usefulness. The preliminary cost estimating procedure developed for the AHD is workable and can be applied to a wide range of highway construction and maintenance projects. (Author)