Which of the following delivery systems usually allows project fast-tracking?

• A. Integrated Project Delivery
• B. CM at Risk
• C. Design-Bid-Build
• D. Design-Build

Answer: (D)

Fast-tracking means starting construction before the design is fully finished, relying on ongoing design decisions to evolve while building proceeds. The delivery system that best enables this overlap is Design-Build, because design and construction are under one contract and the team works together from the outset. This integrated approach allows early procurement, constructability input, and progressive detailing, so construction can begin on initial design packages while later design work continues. That overlapping sequence is what shortens the project timeline.

Design-Bid-Build, by contrast, requires a complete design before any construction begins, so it cannot effectively fast-track. CM at Risk can allow some early action with the construction manager involved early and a GMP, but the workflow still hinges on design progression and staged signaling, not the same seamless overlap as in Design-Build. IPD promotes collaboration, which can accelerate, but the most straightforward and reliable path to fast-tracking is Design-Build.