BART’s Traction Control Modernization Program (TCMP) aimed for the replacement of existing train control systems with a new communications-based train control system. BART’s goal for the project was to achieve the shorter headways needed to greatly improve system reliability, reducing delay incidents, and increasing ridership. In a supporting role, JMA designed the civil elements, including drainage, of the new train control cable troughs and Switch Power Supply Cabinets (SPSC) to power switch machines at numerous crossovers and turnouts system wide. JMA conducted many site visits during blanket hours with BART to assess existing conditions and proposed the new trough alignment. The project consisted of 9 at-grade locations and an additional 5 aerial locations for which the JMA team produced civil plans and details based on systemwide aerial topographic survey. The 100% design was approved by BART and the project entered construction in 2022.