CTS was founded in November 1981 as a partnership between Renata Prochaska and Paul Prochaska. From its inception, the firm sought to provide quality-engineering services to its clients while fostering an environment that uses administration as a tool and not a hindrance. The name CTS, which stands for Civil Transportation and Structural, was adopted to reflect the collective expertise of the founding members. Over the years, the firm's success at meeting its client's needs has led to its growth and the addition of new services including Land Surveying, Mapping and Construction Administration.

CTS has a branch office in Hillsboro, OR. The firm's clientele includes public and private agencies throughout the Pacific Northwest.