It was a happy ending for Maria’s Fresh Seafood Market employee Kevin McKay, whose box truck overturned on the westbound Interstate 10 Twin Span bridge in Louisiana on Tuesday afternoon on his route to pick-up oysters for the Pensacola store. McKay was able to escape from the truck, which landed belly-up in the water, before being rescued by a local fisherman and transported to a hospital by Acadian Ambulance, the St. Tammany Fire Protection District 1 shared in a social media statement Tuesday . The St. Tammany’s crew boarded a Sheriff’s Office boat with rapid divers deployed for a…..