If you’re near the Rose F. Kennedy Greenway, be sure to look up. A new, high-flying piece of public art began to take shape on Sunday morning.

Dozens of workers closed nearby streets and set to work installing the new piece of public art using a battery of cranes and scissor lifts.

Brookline artist Janet Echelman designed the 600-foot shimmering fiber sculpture made of polyethylene rope to respond fluidly to the wind and weather.