Since her girlhood, Prudence Winship has gazed across the tidal straits from her home in Brooklyn to the city of Manhattan and yearned to bridge the distance. Now, established as the owner of the enormously successful gin distillery she inherited from her father, she can begin to realize her dream.

Set in eighteenth-century Brooklyn, this is the story of a determined and intelligent woman who is consumed by a vision of a bridge: a gargantuan construction of timber and masonry she devises to cross the East River in a single, magnificent span. With the help of the local surveyor, Benjamin Horsfield, and her sisters - the high-spirited, obstreperous Tem, who works with her in the distillery, and the silent, uncanny Pearl - she fires the imaginations of the people of Brooklyn and New York by promising them a bridge that will meet their most pressing practical needs while being one of the most ambitious public works ever attempted. Prue's own life and the life of the bridge become inextricably bound together as the costs of the bridge, both financial and human, rise beyond her direst expectations.