An assessment of SCDOT design-build project schedules

Design-build is an alternative project delivery method in which a single contract is awarded to provide both design and construction services. In this method of project delivery, construction contractors and design engineering consulting firms form an integrated team and assume the responsibility for design and construction. The South Carolina Department of Transportation (SCDOT) has been utilizing this delivery method since 1996 with inconsistent results. This project has gathered and analyzed SCDOT design-build project schedule data for the last ten years and attempted to understand if design-build projects are being delivered on schedule, and if not, what factors are contributing to the schedule delays. The primary goal of data collection for this project was to evaluate the schedule data of all SCDOT design-build projects that had a Notice to Proceed (NTP) issued after January 1, 2010.