Boston, MA According to Dewberry, a privately held professional services firm, Justin Slack, PE and Matthew Tilden, have been promoted to associate.

Slack has nearly 14 years’ experience and has been with Dewberry for 10 years. As a project manager for the transportation group, he performs bridge design, bridge ratings, and bridge and tunnel inspections. He recently served as project manager for the Massachusetts Department of Transportation’s Metropolitan Highway System Tunnel Inspection contract and Statewide Bridge Inspection contract. Both projects spanned across the state.

With more than a decade of experience in telecommunications, Tilden’s expertise lies in the design of telecommunications facilities throughout the New England area. His role in the design of these facilities involves on-site analyses of existing building, tower, and water tank conditions; coordination of field surveys and structural analyses; preparation of lease exhibits, zoning, and final construction drawings; post-construction inspections; and project alignment with zoning and environmental regulations and building codes. Tilden is currently the project manager for various telecommunications sites, supporting macro small cell, site upgrades, and distributed antenna system programs.

Tilden earned a bachelor’s degree in engineering and management from Clarkson University (1997).

Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients. Recognized for combining unsurpassed commitment to client service with deep subject matter expertise, Dewberry is dedicated to solving clients’ most complex challenges and transforming their communities. Established in 1956, Dewberry is headquartered in Fairfax, Virginia, with more than 50 locations and 2,000+ professionals nationwide.