Time/Cost Bidding

by Zohar J. Herbsman, Univ of Florida, Gainesville, United States,
Ralph D. Ellis, Univ of Florida, Gainesville, United States,

Document Type: Proceeding Paper

Part of: Preparing for Construction in the 21st Century


This paper presents the details of a relatively new and innovative approach to determining the low bidder on highway construction contracts. In the cost and time method each bidder proposes both a time duration for the project and traditional unit prices for the work items. A Road User Cost is applied to the proposed contract times. The low bidder is determined as the proposal which provides the lowest combination of bid cost and total road user cost. Several state transportation authorities have experimented with this system. Results of these trial cases and the comments of the participants provide interesting indications as to the merits of this new system. This paper analyzes the data acquired from 16 case studies and the conclusions that can be drawn from them. Using those conclusions, an innovative bidding procedure can be developed for application in public and private sectors.

Subject Headings: Bids | Infrastructure construction | Contracts and subcontracts | Highway engineering | Highways and roads | Benefit cost ratios | Construction costs | Construction management

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