Terry E. McMillen, Sr. founded McMillen Engineering Inc. in 1977. It was a rather humble beginning as Terry and his wife, Denise, began by converting a portion of the family room in their home into office space. The early years required long days, a lot of work and dedication as the company grew steadily.

​

They soon realized the need for an office outside of their home and moved into their first ‘official’ office in Hopwood, Pennsylvania. They stayed at this location for a few years, then moved to the Hopwood Center for more office space. The company’s continual growth led to the construction of a new office building in the Fayette County Business Park on Wayland Smith Drive, just west of Uniontown. It was their 25th year in business and it was a great way to begin the second twenty-five years.

​

Since 1977, McMillen Engineering Inc. has provided a wide spectrum of civil engineering, but the consistent focus from the first project at Todd Farm until today has been land development. The initial projects were a variety of residential developments followed by commercial/light industrial projects and then large-scale retail developments. As the needs and opportunities of society changed, they expanded services to include infrastructure (water and sewer), design of sewage treatment plants, sewerage collection and water distribution systems, structural design, environmental engineering, and traffic engineering.

​

We believe that education - at all levels - provides growth opportunities not only personally and professionally, but also collectively as a society. ​This philosophy led us to several collaborations with community partners to provide informative workshops and trainings for colleagues and local professionals. ​In addition to ensuring professional development among our team and within the engineering and surveying professions, we remain involved in educational programs for students throughout Fayette County.