Hatush and Skitmore (1997) pointed that the tender system of basing decisions on the minimum price has been used in New York since 1848 for highway and bridge tenders. The main idea of such a method was to save financial resources and create equal competition for all contractors by lowest bid. Hatush and Skitmore (1997) recognized five main elements that was common factors in the contractor selection process for each and every one types of procurement arrangements. These are project packaging, invitation, prequalification, short listing and bid evaluation. Hatush and Skitmore (1997) identified pre-qualification as a pre-tender process used to investigate and assess the capabilities of contractors, hence providing the client with a list of potential contractors to invite to tender. Bid evaluation despite involves similar process it is different in two aspects; it occurs at the post tender stage and it considers both bid amount and the contractors’ capabilities. Russel and Skibiniewski (1988) defined bid evaluation as a decision-making process that involves the development and wide consideration of necessary and sufficient decision criteria used to assess the contractors’ capabilities. It requires knowledge and experience from the project manager in order to use the appropriate criteria to insure the selection of the most suitable contractor technically and financially for the project (Hatush and Skitmore (1997).