Referred to by Le Corbusier as "blessed. . . . the only seat of grace in the disordered city", the GW was once the world's longest suspension bridge, with a main span almost twice the length of the previous record-holder's. It lost that title long ago, but it has since earned a new one: it's now, according to the Port Authority, the world's busiest bridge (in terms of vehicle traffic). Under construction just to the left of the Jersey-side tower in Fort Lee is the first of two 47-story residential high-rises that, speaking of superlatives, will be the tallest buildings in Bergen County.