COST COMPARISON OF FOUR-LANE US STAGE CONSTRUCTION ON INTERSTATE HIGHWAYS

THROUGHOUT THE PLANNING OF MANY HIGHWAY IMPROVEMENTS THERE FREQUENTLY ARISE OCCASIONS WHEN IT MIGHT BE DESIRABLE AND ECONOMICALLY PROFITABLE TO CONSTRUCT THE FINAL FULL FACILITY IN A SERIES OF STAGES. SUCH OPPORTUNITY IS AFFORDED ON THE INTERSTATE HIGHWAY SYSTEM WHEREIN TODAY'S TRAFFIC VOLUME HARDLY JUSTIFIES FOUR-LANE CONSTRUCTION AND YET AT SOME TIME IN THE FUTURE FOUR LANES OF HIGHWAY WOULD BE REQUIRED. A DETAILED ANALYSIS IS PRESENTED OF THREE INTERSTATE HIGHWAY PROJECTS TO DETERMINE THE RELATIVE ECONOMY OF INITIALLY CONSTRUCTING THE FOUR LANES OF COMPLETED HIGHWAY AS COMPARED TO BUILDING TWO LANES NOW AND THE ADDITIONAL TWO LANES AT SOME TIME IN THE FUTURE. THE ECONOMY OF DESIGNING AND BUILDING THE TWO LANES OF ORIGINAL CONSTRUCTION DESIGNED TO FOUR-LANE INTERSTATE STANDARDS IS COMPARED TO CONSTRUCTING THE TWO ORIGINAL LANES DESIGNED FOR TWO-LANE, TWO DIRECTIONAL OPERATION ON THE FOUR-LANE RIGHT-OF-WAY SO AS TO PROVIDE FOR MORE FREEDOM IN PASSING THAN IS PROVIDED FOR IN THE FOUR-LANE DESIGN. THE DETAILS OF CALCULATING THE PRESENT WORTH OF THE VARIOUS DISBURSEMENTS FOR CONSTRUCTION AND MAINTENANCE FOR THE THREE DESIGNS OF EACH OF THE THREE PROJECTS ARE GIVEN. THE ANALYSIS POINTS OUT THAT THE RELATIVE ECONOMY OF THE STAGE CONSTRUCTION DEPENDS ON TWO PRIMARY FACTORS: FIRST, THE ADDITIONAL COSTS OF CONSTRUCTION BECAUSE THE WHOLE HIGHWAY IS BUILT IN TWO STAGES RATHER THAN IN ONE, AND SECOND, THE TIME INTERVAL BETWEEN THE STAGES OF CONSTRUCTION. ALSO, AN IMPORTANT FACTOR IS THE RAPIDITY WITH WHICH THE TRAFFIC VOLUME INCREASES, WHICH IN TURN AFFECTS THE PERIOD OF TIME BETWEEN INITIAL CONSTRUCTION AND THE SECOND STAGE OF CONSTRUCTION. ALTHOUGH THIS ANALYSIS IS PRESENTED FOR THREE SPECIFIC PROJECTS, THE PROCEDURE APPLIES TO ANY PROPOSED HIGHWAY FACILITY TO BE CONSTRUCTED IN A SERIES OF STAGES AS COMPARED TO BUILDING THE ENTIRE COMPLETED PROJECT INITIALLY. /AUTHOR/

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  • Supplemental Notes:
    • No 306, pp 64-80, 13 TAB, 8 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Authors:
    • Winfrey, Robley
  • Conference:
  • Publication Date: 1961

Media Info

  • Media Type: Digital/other
  • Monograph Title: Studies in highway engineering economy
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00201417
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 1 1994 12:00AM