Seattle— Parsons Brinckerhoff (PB) has expanded its technical staff in Seattle with the hiring of Rick Browning, Frank Nelson, Kenneth Loen, James Eoff, Elaine Kuehn, and Pang Yen Lin.

A supervising architect, Browning has 30 years of experience in architecture and urban design. He earned a bachelor's degree in architecture from the University of Oregon and is a member of the American Institute of Architects.

A senior supervising engineer, Nelson has 38 years of professional experience, including managing movable, historic and painted bridge programs for the Oregon Department of Transportation. He earned a master's degree in electrical engineering from the University of Washington and a bachelor's degree in electrical engineering from the University of Colorado. He is a member of the Institute of Electrical and Electronics Engineers.

A lead engineer, Loen has 16 years of experience in civil engineering and urban planning. He received a master's degree in urban planning degree from the University of Washington and a bachelor's degree in engineering physics from Seattle Pacific University.

A senior principal technical specialist, Eoff has extensive experience in all types of track maintenance, construction and compliance with Federal Railroad Administration track standards. He is a member of the American Railway Engineering and Maintenance-of-Way Association.

A senior civil engineer, Kuehn has 13 years of experience in stormwater system planning, design and modeling. She has a master's degree in bioresource engineering and a bachelor's degree in civil engineering from Oregon State University, as well as a bachelor's degree in psychology from Swarthmore College. Her professional affiliations include the American Society of Civil Engineers, American Water Works Association, Society of Women Engineers, and Womenon Water.

Lin is a supervising structural engineer with 21 years of leadership experience in both bridge design and construction management projects. He received a master's degree in civil/structural engineering from the University of Maryland and a bachelor's degree in civil/structural engineering from Tamkang University in Taiwan.