New York City is not short of famous bridges, none more so than the crossing that’s appeared in a thousand movies: the Brooklyn Bridge. But if an Aussie were to venture just a little off the tourist track they would see a bridge that might baffle them. In the Astoria neighbourhood of Queens, the skyscrapers of Manhattan still visible in the distance, is what appears to be the Sydney Harbour Bridge. But just, weirdly, on the other side of the world. What, a tourist may ask, is it doing here? To be fair, many bridges are of standard designs (crossings...