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Park Over the Highway

St. Louis, Missouri

The CityArchRiver 2015 project is transforming St. Louis between its downtown area and the grounds of the Gateway Arch, into an international tourist attraction. CMT was the prime consultant for the design of essential transportation-related infrastructure for this improvement. Elements included design of the projects that enhanced connectivity over I-44, including the 280-ft Park Over the Highway (POTH) land bridge, replacement of the Walnut Street Bridge and converting a vehicle bridge to a pedestrian bridge.  We also designed enhancements to roadway, sidewalk and nine key intersections for a four-and-a-half-block city street area involving new geometrics, traffic calming, lighting, signals and ADA modifications.

CMT’s selection for this work was predicated on our reputation to transform an architect’s high-profile vision with non-standard features, into a functional and constructible transportation project that maintained the integrity of the architect’s design. Our ability to meet schedules, create innovative design techniques to meet stakeholders’ goals, address complex challenges and contain cost was on full display on the POTH project.

CMT delivered the project two months ahead of schedule, while coordinating the needs of 14 separate agencies.  We also conducted a first of its kind Construction Staging Workshop, which decreased the construction time by three months, equating to over $1 million in savings.