Exploring critical delivery selection risk factors for transportation design and construction projects

Purpose – The purpose of this paper is to investigate the impact of risk on the project delivery selection process of three primary methods in use in the USA, including design-bid-build (DBB); design-build (DB); and construction manager/general contractor (CMGC). Design/methodology/approach – The review of empirical studies, national survey questionnaire, multivariate analysis, and cross-validating discussion are adopted for this research. The risk factors were identified through an exhaustive literature review and empirical studies that included more than $10 billion of transportation projects. Experts with an average of 25 years of professional experience related to risk and project delivery methods in the transportation industry were invited to participate in the survey. Findings – There were six critical risk factors for DBB, seven for DB, and six for CMGC. These critical risk factors are ranked differently from each delivery method. The most critical risk factor for DBB is construction risk, for DB i...

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