TRC is a provider of technical, financial, risk management and construction services to commercial and government customers throughout the United States. Offering one of the nation's largest cultural and natural resource management programs, TRC's cultural and natural resources practice has developed key relationships with federal, state and local agencies. The practice offers clients a comprehensive suite of cultural and natural resource management services, which range from cultural resource surveys to baseline inventories for wildlife, aquatic biota, vegetation, and threatened and endangered species. TRC is a structural engineering firm with a spectrum of capabilities that include the special knowledge to analyze and solve unusual and difficult structural problems. TRC offers a variety of services, such as experience in bridge design, applied research, earthquake engineering and advanced computer technology. The company produces plans, specifications and cost estimates for varying types of bridge projects, ranging from new bridges to widening, strengthening and retrofitting existing bridges. Headquartered in Windsor, Conn., it operates a branch location in Nashville, Tenn.