About T&ES

A message from the Director of T&ES, and information about T&ES.

Page updated on Jun 24, 2019 at 2:58 PM

Welcome! Yon headshot

The Department of Transportation & Environmental Services, often referred to as T&ES, is proud to build and maintain the City’s infrastructure and services that serve as the foundation for our community. We know that what we do is vital to creating a healthy environment, a thriving economy and a vibrant community.

As responsible stewards of your infrastructure, the employees of T&ES pride ourselves on delivering quality customer service. We strive to have all our interactions and the work we do strongly reflect our values of respect, collaboration, innovation and excellence.

If you ever have a question, comment or concern about the Department or the services we deliver, please contact me directly. I value your feedback, and look forward to every opportunity to grow and improve.

– Yon 

Yon Lambert, AICP
Director, Department of Transportation & Environmental Services
703.746.4025
yon.lambert@alexandriava.gov

Overview & Goals:

T&ES focuses on superior customer service, environmental and transportation projects that promote economic development, strategic management, employee relations and environmental sustainability:

  • Customer Service 
    Focus on listening to the needs of our customers and providing timely and responsive service at all levels of the organization.
  • Economic Development, Environmental Programming, & Transportation Planning
    Further a disciplined focus on innovative and critical projects; and core services that contribute to the City’s overall economic development, mobility, and environmental sustainability. 
  • Strategic Management
    Use data-driven decision-making to align our work with the City’s Strategic Plan and annual Budget Process. 
  • Employee Relations
    Promote a culture of excellence, with a renewed focus on communications, employee empowerment and accountability, professional development, and teamwork. 
  • Sustainability
    Ensure that all our work is in alignment with the City’s Eco- City Charter and Environmental Action Plan 2030, which promotes and implements environmental responsibility.

Mission Statement:

The Department of Transportation & Environmental Services (T&ES) is a community partner in shaping a livable, green, and prospering Alexandria.  We plan, build, operate, and maintain transportation systems and infrastructure that improve mobility and provide people and businesses with core public services.  The work we do keeps Alexandrians moving, growing sustainability, and thriving.  

Top T&ES Services 

T&ES Senior Staff 


Jeff DuVal
Deputy Director of Operations
2900 Business Center Drive | 703.746.4103

DuVal oversees T&ES operations, including public works services, resource recovery, and traffic operations.   


Hillary Orr 
Deputy Director of Transportation
City Hall, 301 King Street, Room 4100 | 703.746.4140

Orr oversees transit services, transportation planning, traffic engineering, and the City’s GO Alex program. 

William Skrabak
Deputy Director of Infrastructure & Environmental Quality
2900 Business Center Drive | 703.746.4065

Skrabak oversees the City’s infrastructure and environmental quality programs, including Chesapeake Bay, Erosion and Sediment Control, MS4 (stormwater) and regulatory responsibilities and permitting for the City’s Combined Sewer System. 


Heather Diez
Deputy Director of Right-of-Way and Development Services
City Hall, 301 King Street, Room 4100 | 703.746.4025

Diez oversees the department's development, permit, survey and inspection work.   

Contact Us

Office Hours
Monday to Friday, 8 a.m. to 5 p.m., except City holidays

Connect With Us
City Hall 
301 King Street, Alexandria, VA 22314
Phone: 703.746.4025
Fax: 703.519.3356 

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