July 8, 2025, Hollidaysburg, PA – Keller Engineers, Inc., with locations in Hollidaysburg, State College, and Gettysburg, PA and Haddonfield, NJ is a full-service engineering firm providing client-focused civil and structural engineering, and surveying services.
Keller Engineers, Inc. is excited to welcome Doug Coffman to the Transportation Division as a Construction Inspector!
Doug has 30 years of experience which includes working within the heavy highway construction industry as a Foreman/Superintendent. He also completed the 12 TA-TCI Training Modules and is a certified NECEPT Concrete Field-Testing Technician.