An antique original engineer drawing of the Blackwells Island Bridge Manhattan Anchor Pier and Elevator Bridges in New York City. The drawing is a detailed plan of the pier and elevators, with precise measurements and notes. Dated to 1905, framed. The drawing provides a glimpse into the engineering challenges of building one of New York Citys most iconic bridges. The Blackwells Island Bridge, now known as the Queensboro Bridge, was completed in 1909 and is a vital part of the citys transportation infrastructure. Antique Engineer Drawings And American City Planning History Collectibles.