About Us

We are professional software developers with more than 25 years experience.

TRC software formerly Imbsen & Associates is a leader in bridge engineering computer technology and has gained recognition with its WinSEISAB project. The computer program WinSEISAB is used to analyze the response of a bridge subjected to earthquake excitation. TRC markets several software programs and presents national training seminars and workshops.

TRC is committed to the development of software that keeps up with advancements in bridge engineering and computer technology. We are not a recent software startup company but have been developing/selling our software since the early 80's. With over 25 years in this field of software development we plan to continue to serve our customers for many more years to come.

All our support staff are bridge designers and use all the listed software on this website software on a daily basis. We welcome any comments or feedback regarding our programs.

Please send all inquires to Koung Thao at KThao@trcsolutions.com

About TRC Companies, Inc.

A pioneer in groundbreaking scientific and engineering developments since the 1960s, TRC is a national engineering, consulting and construction management firm providing integrated services to the energy, environmental and infrastructure markets. We serve a broad range of clients in government and industry, implementing complex projects from initial concept to operations.

TRC is 2,400 technical professionals and support personnel at more than 70 offices throughout the U.S. Our clients depend on TRC’s multidisciplinary teams to design solutions to their toughest business challenges in the energy, environmental and infrastructure markets.