Clark Nexsen Announces Principal Promotions

Clark Nexsen announces new principalsWe are excited to announce the promotion of Ian Johnston and Wade Williams to principal. They are recognized by both colleagues and clients for their innovative ideas and technical expertise. As we celebrate Clark Nexsen’s 100th anniversary, these individuals represent the future of the firm.

Ian Johnston, PE
Ian has been involved in the civil and transportation engineering industry for more than 20 years. As head of the Virginia Beach transportation department, he leads the design and delivery of transportation improvement projects. Ian’s experience encompasses the management and design of a wide variety of projects, including design-build, PPTA, signal and intersection improvements, drainage improvement, roadway widening, interstates and interchanges, and bridges. His clients include the Virginia Department of Transportation, the City of Virginia Beach, and other municipalities within the State of Virginia.

He is a skilled strategist and communicator who has contributed to growth in the firm’s Transportation market. His portfolio includes the Wythe Creek Road in Hampton Roads, Virginia, a 2-mile project that includes a 1,600 foot bridge with VDOT’s first 3-lane reversible roadway and 22nd Street Bridge replacement in Chesapeake, Virginia. Ian earned a Master’s Certificate in project management from George Washington University and a Bachelor of Science in civil engineering technology from the Rochester Institute of Technology.


Wade Williams, PE, HFDP, BCS, RCx, LEEP AP BD+C
Wade began his professional career with Clark Nexsen in 2001. His experience encompasses mechanical building systems design, facility condition assessments, commissioning and retro-commissioning for federal, state, healthcare, and higher education projects. He leads the Macon office’s mechanical department, working closely with clients and project teams to ensure the highest level of performance and sustainability during all project phases. Representative clients include the University of Georgia, Athens, the Birmingham VA Medical Center in Birmingham, Alabama, the USDA, and NASA’s George C. Marshal Space Flight Center in Huntsville, Alabama.

Engineering runs in Wade’s family. His father was a mechanical contractor and Wade’s lifelong interest in engineering motivates him to discover and develop innovations and efficiencies within HVAC design and construction. He is a licensed mechanical engineer in four states, a LEED AP with a specialty in building design and construction, an ASHRAE certified healthcare facility design professional (HFDP), and is certified by NEBB in building systems commissioning (BCS) and retro-commissioning (RCx). Wade has nearly 20 years of experience and holds a Bachelor of Science in Engineering with a specialization in mechanical engineering from Mercer University.