• PE
Senior Associate
Civil Engineer
27 Years
Bob Frentress

Bob Frentress joined Mackenzie in 1993 after earning a B.S. in civil engineering from Portland State University. He provides street design, storm drainage, sanitary sewerage, water systems, earthwork analysis, and grading design for commercial, industrial, civic, high tech, and residential projects. Bob works both in support of Mackenzie's architects and independently, either contracted directly with the owner/developer for site services or as a subconsultant to an outside architect. He has served as project manager for a range of small retail and commercial site design projects.

"I define a great design as the lowest-cost design that is functional, approvable, and liked by the client."

Featured Projects
Salem Fire Stations #5, 7, 10, and 11Speedway Commerce CenterOrganically Grown24 Hour FitnessStadium Fred Meyer Store Remodel & ExpansionClackamas County Public Services BuildingFred Meyer Prototype RolloutRivergate Corporate CenterHillsboro Fire Stations