An angler casting a swimbait under a busy New York highway bridge; another dangling a chunk of crab in the pilings of the Chesapeake Bay Bridge Tunnel 400 miles south; a troller pulling plugs down a low-slung span in Miami; a guy on a skiff working a topwater along the gleam of streetlights on a Gulf Coast bridge: They all know the fish that lie hidden at nearby bridges.
1.) Work a plastic swimbait such as the Egret Wedgetail along the shadow line.
2.) Another shadow-line option: oversize jigs such as the Spro Bucktail.