Dennis M. Leach

Director of the Division of Transportation for the Department of Environmental Services in Arlington, Virginia and has worked for Arlington since 2004.

He oversees a broad range of programs and services including transportation planning, design, construction and operations of Arlington’s multimodal transportation infrastructure and services.  This scope includes one of the nation’s largest transportation demand management and commuter services organizations, a progressive transportation engineering/intelligent transportation systems program, a growing local transit program, and a program that focuses on infrastructure-related development review, permitting and inspections. Under his leadership, Arlington has been recognized as one of the leaders in multimodal transportation and transit-oriented development in the Washington Region and nationally.  

Mr. Leach has over 36 years of transportation planning, policy, operations and management experience working for all levels of government. He has served as a frequent speaker at transportation, planning and smart growth conferences focused on transit-oriented development and multimodal transportation system performance.  He is an active member of the Institute of Transportation Engineers, American Planning Association and the National Association of City Transportation Officials.   

He holds a Bachelor’s Degree in Architecture with a Concentration in Civil Engineering from the University of Notre Dame, a Masters’ Degree in Architecture with an Urban Design Certificate from the University of Pennsylvania and a Master’s Degree in Business Administration from Temple University.

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