Construction has passed the halfway mark on 555 Greenwich Street, a 16-story commercial building in Hudson Square, Manhattan. Designed by COOKFOX Architects and developed by the joint venture Hudson Square Properties, which includes Trinity Church Wall Street, Hines, and Norges Bank Investment Management, the 270,000-square-foot structure will connect on nearly every floor with its adjacent neighbor at 345 Hudson Street via a horizontal overbuild, bringing the overall leasable space to 715,000 square feet. The project is also being designed as one of the city’s most sustainable buildings. Tishman Construction is the contractor for the building, which is rising on a plot bound by Greenwich Street to the west, Charlton Street to the south, and King Street to the north.