In 1962, the Beatles were a hit in Europe and just being discovered in America. That year, Route 80 started pushing its way through Bergen and Passaic counties along with a string of overpasses carrying local streets over it, all built between 1962 and 1971. These aging spans are tired and state Department of Transportation officials have proposed a massive, $900 million, 10-year construction project to replace the nine bridges and rebuild and widen part of the expressway underneath them between Totowa and Hackensack. “The bridges were built during the original (Route 80) construction,” said N…