Best Practices in Pavement Design for Design-Build Projects

In the traditional construction procurement model, generally referred to as design-bid-build, the owner is responsible for the full design of a project before contractors are invited to bid on it. Design-build contracting, on the other hand, shifts responsibility for some of the design to the contractor. The owner specifies its requirements for the project and often performs some portion of the design, but some components are left to bidders to define. The Minnesota Department of Transportation (MnDOT) uses design-build on certain transportation construction projects within the project delivery guidelines of the Federal Highway Administration. Under its current practices, however, MnDOT specifies the pavement designs to be used. The agency was interested in investigating other states’ practices for pavement design in design-build projects to determine if it is feasible to open the pavement design component of its projects to bidders, and if it is, to identify best practices for doing so. As part of this investigation, MnDOT is also interested in using alternate technical concepts in which the agency designs a project for bidding but bidders may submit alternatives that meet or exceed requirements for certain components with agency approval. CTC & Associates gathered information for this report through an online survey of state departments of transportation to assess their experience with pavement design in design-build projects and through a literature search of published findings. Using those results, CTC & Associates worked with MnDOT to identify five respondents to interview in further detail.


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  • Accession Number: 01600666
  • Record Type: Publication
  • Created Date: May 25 2016 12:37PM