Gall Zeidler Consultants Employee Directory
Civil EngineeringVirginia, United States51-200 Employees
Gall Zeidler Consultants, based in Ashburn, Virginia, has 25 years of experience delivering tunnel design, geotechnical engineering, rehabilitation, and program and construction management services. The firm has completed more than 300 miles of tunneling projects worldwide and specializes in tackling difficult ground conditions, including shallow overburden, through a combination of dewatering, grouting, and ground freezing, while integrating conventional and mechanical tunneling methods with waterproofing. Its service scope covers feasibility studies, development of tunnel designs and contract documents, up to construction management and on-site support, serving clients in rail and transit, transportation, power, water and wastewater, and mining sectors. Experts from the firm are frequently invited to participate on expert review panels that influence tunneling practice globally. In October 2025, Gall Zeidler Consultants announced recognition from the International Tunnelling and Underground Space Association for its work on the Washington Metro Yellow Line Rehabilitation Project (ITA Silver Award).
1-888-653-2347 
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