St. Johns wins barge contract with one of world’s largest construction companies. St. Johns Ship Building of Palatka, Fla. won a contract to construct a custom crane spud barge for Skanska, one of the largest construction companies in the world. This is the first contract St. Johns has signed with Skanska USA, a leading national construction company with 7,000 employees in the U.S. and 2010 revenues of $4.8 billion. “In a highly competitive environment, Skanska chose St. Johns because they saw our previous work…