The Citgo Petroleum Refinery in Lake Charles, Louisiana is one of the largest producers of gasoline in the United States. For the Substation 60 project, Advanced Engineering Resources provided civil and structural design services associated with the upgrade of electrical equipment in an existing refinery process unit. AER designed a structure to support an electrical switchgear building above grade and an independent structure to support transformers above the building to resolve site constraints. Additional designs were performed for cable tray road trenches and extensive additions and modifications to existing structures to accommodate new cable trays installed throughout the process unit.