Columbus Crossroads – Design-Build for New I-71/I-670 Interchange

DLZ is performing construction inspection, record keeping, and documentation for the design-build of Columbus Crossroads; the new I-71/I-670 Interchange within the City of Columbus. The scope of work includes the assessment and documentation of the work performed by the Design-Build Team (DBT).

This $200 million project features 22 bridges (including two fly-over bridges and a one-of-a-kind cap with a cultural wall), 28 retaining walls, 4,000+ feet of 54” storm sewer micro tunneling, and roadway reconstruction along 29 alignments.

For the Columbus Crossroads, DLZ is monitoring the construction work and representing ODOT at all mandatory quality inspection checkpoints. The DLZ team assures overall contract compliance as it relates to

• The acceptance of materials
• Construction workmanship
• Self-inspection by the DBT
• Independent verification by the Independent Quality Firm (IQF)
• Complete project documentation primarily through the use of electronic tablets and Share Point

DLZ is also assisting ODOT with claims analysis, including participation in regular Dispute Resolution Board (DRB) meetings.

DLZ’s experienced staff is fully integrated with the ODOT Team to work on the Columbus Crossroads project. It works proactively with District and Central Office Officials to satisfy the current project requirements and to improve existing quality control tracking systems while developing new ones for future design-build projects.