MWAA | Dulles Corridor Metrorail Project, Phase 2, Package B: Rail Yard and Maintenance Facility

The yard facility incorporates four lead tracks, five shop tracks, a wash track, 16 yard storage tracks and nine maintenance-of-way tracks. Overall, the yard encompasses 43,400 feet of track and 50 turnouts and can accommodate an additional 9,300 feet of future track for storage and maintenance.

SYSTRA provided design development, coordination and management and is responsible for design quality, safety/security certification, systems integration for the design, and construction design services. This included shop drawing review, responses to RFls, and site inspection visits. SYSTRA also performed all aspects of design of track/special trackwork, electrical traction power, mechanical/industrial elements and project commissioning support. There was a focus on minimizing deviations from the WMATA design criteria and preparing detailed documentation regarding deviations that could not be avoided.

The project also included design of two 3-MW traction power substations and all supporting systems including feeders and connections to the third rail, negative return, jumpers, sectionalizing and contact rail heating systems to support a yard sized to store 228 vehicles. The team prepared the RAILSIM load flow model for sizing all traction power equipment and integrating operations with the Silver Line.

This project was designed to meet the requirements for LEED Silver certification.