Bridges of size

Noseweek: "The bridge finally opened on 19  March 1932. At 505 metres, it was aiming to become the largest single- span-arch bridge in the world. Alas, just before the ceremonial cutting of the ribbon, Bryson wryly records that “the Bayonne bridge in New York quietly opened and was found to be 6.35cm – 0.121% longer.”