Photo courtesy of HNTB

Applying advanced modeling tools and creative structural detailing, the team resolved uplift issues, ensured seismic and thermal compatibility and maintained ADA-compliant grades across complex vertical and horizontal alignments. An existing 12-in. high-pressure gas line and subgrade utilities dictated pier placement for the ramp from the island to Manhattan, while curved steel girders required innovative detailing to manage bearing uplift.

Photo courtesy of HNTB

Along with minimizing disruptions to the site’s natural features, the project integrated the use of sustainable concrete, reducing the carbon footprint by 24%. To create a safer and more welcoming environment for all users, the project also includes reconfigured intersections, new crosswalks, a dedicated bus lane, extensive landscaping, lighting upgrades, wayfinding signage and new pedestrian plazas that serve as gateways to the park.

Photo courtesy of HNTB

Construction activities were carefully sequenced to maintain safe access for park users—including children and cyclists—while minimizing conflicts with ongoing events and recreational activities. Biweekly coordination meetings with NYC Parks helped minimize disruptions, while a second steel fabrication facility was engaged to accelerate delivery. Frequent safety walk-throughs were conducted to identify and proactively resolve issues to protect both park users and construction workers. This flexible, responsive approach enabled the team to open the vehicular ramps before Memorial Day—four months ahead of schedule and at budget.