GBA Companies provide innovative, sustainable engineering, architectural, and construction management solutions for high-profile projects throughout the World. GBA and its subsidiaries, GBA Builders, LLC, gba Systems Integrators, LLC, and ViroCon, Inc. serve primary markets including transportation, traffic integration, water environment, building design, civil/site development, commissioning, sustainable design and surveying. GBA Companies employ a staff of 200 located in Lenexa, Kansas, and offices in Missouri, Colorado, Nebraska and Illinois. Members of GBAs multi-disciplined staff work closely with clients to accomplish the firms core purpose creating remarkable solutions for a higher quality of life