Colorado T-REX Project (TRansportation EXpansion) - Unique Approach, and Success in "Design Build" Methodology

Unique Approach, and Success in "Design Build" Methodology

T-REX is one of a few transportation projects in the US to use a design-build contract in which the same contractor is responsible for the project's engineering and construction. Under this type of contract, the contracting agency provides a general concept of the plan, and the contractor is responsible for most of the details, many of which are worked out as the project proceeds. "This project represents the first time, in any state, that a state transportation department and a transit agency have come together to build one project under a single financial plan, to provide travelers with integrated transportation system options." said Randy Pierce, who served as consultant principal-in-charge/project manager of T-REX. "We think, based on our research, that it's the largest transportation design-build project in the country," says Richard Clarke, T-REX project director. "We were able to get it done a lot faster because we finished a lot of the construction before the design was completely done."

T-REX also is unique by combining light rail, highway, bike, pedestrian and other transit options, the project used a multi-modal approach to address some of the traffic problems. The multi-agency cooperation created an effective and efficient partnership. When all of these agencies worked together, they realized this complex project needed innovative approaches, which led to one of the strongest reasons why a design-build methodology was chosen.

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