Joint Development & Adjacent Construction (JDAC) Program

WMATA program page for third-party work adjacent to the Metro system. Designers must comply with WMATA Design Criteria, Administrative and Standard Specifications, Standard Drawings, and Design Drawings; those volumes are issued to project teams through JDAC rather than published for download.

About WMATA: WMATA runs the Washington Metrorail system — six heavy-rail lines serving DC, Maryland, and Virginia — plus Metrobus. Third-party and capital work is governed by the Adjacent Construction Project Manual and the agency's design criteria and standard specifications, with strict clearance, vibration, and stray-current requirements near the rail envelope.

WMATA withdrew public download links for Volumes 4-6 and the Manual of Graphic Standards; request them through JDAC.