Bid evaluation according to Herbsman and Ellis (1992), amount to the ‘major’ criteria of cost, time, and quality as measured by the bid amount, time of execution, and quality of previous work respectively. This implies that the winning bid is fully responsive to the contract in addition to the bidder’s being sufficiently well qualified to undertake the contract (Hardy, 1978). Bid evaluation is used to indicate the procedure for strategic assessment to tender bids submitted by pre-qualified contractors. The strategy used for bid evaluation should reflect the client’s objectives (Hardy, 1978). In addition, Herbsman and Ellis (1992) have also further project-specific criteria, including safety, durability, security, and maintenance. More objective methods have been proposed by Moselhi and Martinelli (1990) and Diekmann (1981) by means of multi-attribute utility techniques for combining the bid price and contractor selection criteria. The evaluation of bids by multi-attribute methods may encounter some difficulties when comparing different criteria measured by different scales. Hence various ways have been suggested for combining criterion values into a single scale. Herbsman and Ellis (1992), on the other hand, proposed a time/cost approach to determine the winning bid in the highway construction contracts. By converting the contract time to cost, a straightforward comparison can be made on a single criterion. Finally, Holt et al. (1993) combine their P2 and P3 score into a simple index by assigning 60% weighting for the P3 score and 40% to the P2 score. Hence, it could be concluded that there is no consensus as yet on a common set of selection criteria for contractor selection. Selection criteria may vary in emphasis according to the characteristics of the project.