Photographer: Chris Goodney/Bloomberg
Workers have almost completed mounting the copper paneling on the American Copper Buildings (née 626 First Avenue), the new tilting, two-towered development on Manhattan’s East Side, but their most striking feature—a three-story, 100-foot-long skybridge—is still open to the elements. On Tuesday, a Bloomberg photographer (and a laughably heights-averse reporter) had the chance to take the construction elevator up to the buildings’ 29th, and then 49th floors, to get a first look…