WMATA Dulles Rail Yard and Maintenance Facility

Langan provided geotechnical engineering services for the design-build of Dulles Rail Yard and Maintenance Facility. This 71-acre site consists of a service and inspection building, warehouse, maintenance of way building, transportation and police building, and train wash building. The site also includes a rail and train layup yard, ancillary structures, employee parking lots, stormwater management facilities, and a network of roadways. Langan’s extensive subsurface investigation consisted of borings with rock coring, temporary groundwater level observation wells, test pits, infiltration tests, seismic refraction surveys, and specialty laboratory testing. Additionally, during the subsurface investigation, Langan provided environmental soil screening services.