Diana Timpson joins HNTB as senior project manager of rail transit

Engineering veteran will serve as design manager for West Seattle to Ballard light rail

BELLEVUE, Wash. (Nov. 21, 2022) –Diana Timpson, PE, PMP, has joined HNTB as a senior project manager in the firm’s Seattle office. Timpson brings more than 20 years of industry experience to her new role as design manager for the West Seattle and Ballard Link Extensions. Currently in preliminary engineering, the Sound Transit project is one of the most transformative infrastructure projects in Seattle’s history, and one of the largest light rail expansion projects in the U.S. today. She will support multidisciplinary team management and design delivery for this and other rail transit programs regionally and nationally.

“Diana brings a high level of experience and expertise to HNTB and will play an integral role in advancing our rail transit programs,” said Brad Miller, PE, HNTB group director and office sales manager for Washington state. “Her depth of knowledge in design, program management and transit construction management will be invaluable serving our rail transit clients across the nation. We are thrilled to welcome Diana to our team.”

Prior to joining HNTB, Timpson spent 16 years with a leading infrastructure engineering company in Seattle, most recently as senior project manager and associate. In that role, she led design from planning through construction support, leading multidisciplinary teams on a wide range of transit projects including Colman Dock and Mukilteo Ferry Terminal for Washington State Ferries, Tukwila Sounder Station for Sound Transit, and Community Transit’s Kasch Park Base Expansion. Her transit experience ranges from bus maintenance to multimodal facilities including commuter rail and light rail stations, ferry terminals and garages.

Timpson also has more than 10 years of experience in managing the analysis, design and detailing of various structural systems for transit facilities, parking structures, and commercial, residential and industrial buildings. Earlier in her career, she served as a project assistant in the architecture industry in Boston, delivering documentation management, construction support, drafting, graphics support and work planning management.

“I’m excited and honored to join HNTB, a firm renowned for its technical excellence and for delivering extraordinary transportation projects across the U.S.,” said Timpson. “This role brings the opportunity to work on projects that are particularly challenging for their scale and complexity. I look forward to helping HNTB deliver solutions for our clients – on the West Seattle and Ballard project and on future transit projects – to meet the changing needs of residents and commuters.”

Timpson holds a Master of Structural Engineering from Cornell University and a B.S. in civil engineering from the University of Massachusetts Lowell. She previously earned a B.A. in philosophy from Colgate University.