The design solution is threefold: firstly, invention of a new paving system, built from linear concrete planks with open joints, tapered edges and seams that permit the free flow of water. Secondly, to slow things down, to promote a sense of duration via long stairways, meandering pathways, and hidden niches. The third element involves dimension of scale. The result is a sequence of spaces and landscapes that respond to their context and connect areas of urban activity below with the High Line above. Energy-efficient LED lighting at waist-level and below, illuminates the pathway for safety, while allowing the eye to appreciate the city beyond and the night sky. A drainage and waterproofing layer minimises future irrigation requirements. All plant species have been carefully selected to produce a primarily native, resilient, and low-maintenance landscape. A specially engineered soil specification takes into account urban and elevated extreme conditions.

As a public-private partnership the realisation of the High Line involved not only collaborations between many architects, designers, engineers and experts, but intense community participation in the form of ongoing workshops and presentations. The intricate agency coordination with federal, state and city agencies, as well as private donors all providing funding to the project, both long and short term exemplifies the complexity of realising urban space projects of this kind.