The Study of Cost-Time Bidding for Bridge Renovations Projects
Date Issued
2010
Date
2010
Author(s)
Hsu, Pei-Yun
Abstract
Government procurements usually take the lowest bid to determine the bid winner, and road engineering is not an exception. However, experience shows that the lowest bid does not equal one with the best quality. A bidder can easily get the contract as long as the price matches well with the threshold. It seems that the bidding system is over simplified when it is only based on a single price.
While income and the standard of living are upgraded, road users begin to ask for better quality of transportation. Therefore, it has become a crucial question as how to shorten construction and travel time, decrease vehicle operation and social costs, and enlarge the efficiency of public construction.
This paper analyzed the 62 cases of cost-time bidding listed on Federal Highway Administration (FHWA). Statistical and data analyses were done for their project costs, prices of award, costs on road users, and reduction rates of construction time. Linear regression was also applied to build analytical models of correlations. Therefore, 34 out of the 62 cases are categorized as inapplicable according to Taiwan’s bidding system, were given descriptive statistical analyses, and linear regression was performed to examine the correlations of factors that determined successful bids.
This paper collected data of national bridge renovation projects, road-user cost, benefit and road-user cost evaluated by Council for Economic Planning and Development(CEPD) and other institutions. Daily traveler’s time value, daily detouring costs, daily vehicle traveling cost, casualty cost, and impact on the environment were taken into consideration as they were quantifiable economic costs. Indirect costs such as losses and impact on business were not of the concern of this research.
The estimated road-user cost was then used in the applicability evaluation based on the biddings of the 34 cases in the U.S. Opinions of competent authorities, owners, project consultants, and business representatives were also incorporated to comment on the contracting and procurement of Taiwan’s public construction projects. The research aimed to provide a vision on applying A+B bidding method in Taiwan and its possible development in the future.
Subjects
cost-time bidding method
daily road-user cost
A+B bidding
bridge renovation project
government procurement
Type
thesis
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