6th and Garrison

Lakewood, Colorado

Tsiouvaras Simmons Holderness served as CDOT’s representative and assisted CDOT Region 1 with a streamline design-build project to replace the US 6 bridge over Garrison Street. The CDOT Bridge Enterprise project had an aggressive project schedule which demanded the efficient, streamlined design-build delivery method. TSH assisted with procurement including preparing the Technical Requirements, assisting with contractor one-on-one meetings, evaluation of Alternative Technical Concepts, and proposal evaluations prior to contract award. Following the award of the contract, TSH reviewed all design submittals, assisted with construction submittal reviews, and reviewed safety critical elements of work. In addition to the bridge replacement, the project aimed to correct vertical curve deficiencies on US 6 while maintaining 3 lanes of traffic open in each direction throughout the project.

  • Owner representative for $12 million design-build project
  • Assisted in all phases of the project; pre-bid, design, and construction