H2R is providing subsurface exploration, foundation design, and geotechnical engineering for this challenging project to be founded in and above the Tampa Limestone (karst) Formation.  TPA’s Main Terminal Curbside Expansion Program includes the replacement and expansion of the curbsides, new approach and exit bridges, new elevated and at-grade lanes, a new Central Utility Plant, and new vertical circulation buildings. The vertical circulation buildings will accommodate express passenger drop off/pick up and include conditioned lobbies to provide a means for passengers to access the main terminal via elevators and escalators from the new lanes. The work will also include appropriate roadway and terminal signage and other associated work to enable vehicle and passenger use of the curbsides, vertical circulation buildings, and existing curbsides during construction. These upgrades will further enhance the customer experience at Tampa International Airport. The Main Terminal Curbside Expansion Program is scheduled for completion in 2023.