Critical System Update
The BART Track Interlocking Replacement Program will renew and rebuild infrastructure constructed more than 50 years ago with modern materials and technology that will last the next 50 years. These projects will allow BART to increase ridership and continue to support the region’s growing economy while getting more cars off the roads.
Under Measure RR, BART is renewing the basic infrastructure that comprises the core of the BART system, including tracks, power infrastructure, tunnels, and mechanical infrastructure. The K-Line Interlocking Replacement project will replace the existing rails, train control, and traction power components, and ties at some of BART’s critical Interlockings to allow commuter trains to continue operating safely and at normal speeds.
When completed, the project will replace 3.5 miles of rails. The original supporting rail, ties, and switch machines will be replaced by a series of No.15 & No.20 Interlocking Switches. In addition to rail, train control system infrastructure will be replaced and updated including both hardware and software used to control speed and movement on the rail network, keeping trains running smoothly and eliminating the possibility of a collision. Finally, the original power distribution infrastructure, a network of power cables used to distribute electricity across the BART system will be upgraded and replaced. This will help avoid future electrical failures and delays and help increase capacity.
While constructing the K-Line Interlocking Replacement Project, some of the temporary construction staging areas overlapped with Caltrans right-of-way on I-980 and Highway 24. These staging areas use the inside shoulder and up to two inside lanes adjacent to the median barrier retaining walls separating the freeway and the BART trackway. Temporary traffic control devices, including construction area signs, flashing beacons, and portable CMS are being built to comply with the Traffic Management Plan.
Full Range of Support
Ghirardelli Associates is serving as BART’s representative to administer and monitor the contract including coordinating with outside agencies, and internal BART stakeholders, and managing both material procurement and construction. We provide on-site resident engineers, and perform construction management, inspection, and permitting support.
Once completed in 2025, the upgraded system infrastructure will allow BART to continue operating safe and reliable service. These projects are some of the most complex track works ever delivered by BART, all without impacting commuter service. The project is currently on schedule and requires continuous coordination and collaboration between our team and key stakeholders to keep the project on time and within budget.
