ICF International has partnered with the U.S. Department of Transportation's Federal Highway Administration (FHWA) to bring innovative approaches to internal operational challenges in FHWA's Knowledge Sharing Initiative. This Communities of Practice Case Study describes a virtual network of people tied together by a common job function or focus area. FHWA's external communities link more than 4,000 staff members from partner organizations in an ongoing information-sharing effort to find common solutions to common problems in the industry.