GPI is a multi-disciplined engineering firm with branch offices throughout the U.S. Headquartered in Babylon, NY, GPI specializes in all phases of transportation (highway and street design, bridge design and condition inspection, traffic/transportation/ITS design and planning, rail design), drainage, storm water and utility assessment/design, construction management/inspection, program management, MEP, structural and fire protection system design, site/civil design, and landscape architecture.
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