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A Bigge crane brought in for the transformer project is pictured besides the BART tracks.

Read more stories about BART infrastructure and big building projects at bart.gov/railtales. 

A newly energized transformer near the core of the BART system is expected to improve the customer experience by increasing power redundancy and resiliency. This translates to increased reliability in the key passage that connects the East Bay to San Francisco. 

The transformer was installed on a whirlwind six-month schedule to ensure the area, so crucial to BART’s busy Oakland Wye in the center of the system, had sufficient backup power in case one of the other nearby substations must be taken down for maintenance. The Oakland Wye refers to a triangular junction where BART trains can switch between multiple lines.  

“All five lines run through the Oakland Wye; a train is going through it every two to three minutes during peak commute, so it's important to have massive redundancy here to mitigate delays and keep trains running,” said Gordon Wong, Principal Electrical Engineer who wore many hats for this project. 

A Bigge crane removes the original transformer on May 17, 2025.

The nearby substations operate at the same time, their transformers and rectifiers fulfilling their job of converting 34.5kv voltage fed via sub-transmission cables from the power grid into the 1,000 DC voltage train motors require to run. 

The old transformer, located between Fruitvale and Lake Merritt stations, needed to be replaced after reaching the end of its life after 20 years of service. BART Traction Power engineers made the decision to replace it after regular maintenance testing alerted staff that the equipment was at risk of failing.  

“Myat deemed this year the ‘Year of the Substation,’” said Asst. Chief Infrastructure Delivery Officer Manal Bishr of her colleague Myat San, BART Chief Infrastructure Delivery Office. “We gave him a little bit of a hard time about that, but it’s really motivated the team. This is huge for providing power to the core of our system!" 

Left to right: BART Traction Power Electricians Javier Morales and Robert Flores install high-voltage wiring on May 28, 2025.

By removing a transformer near Dublin/Pleasanton and reinstalling it at this Oakland location, BART saved a significant amount of money and honored the agency’s sustainability values. Only one line runs from Dublin/Pleasanton to Bay Fair, and trains have lower frequencies. This means the area requires less power to operate. 

“We saved at least $500,000 and three years of work by using a pre-existing transformer,” Wong said of the project, which was funded by voter-approved Measure RR. “This project cost half the price of furnishing a new transformer."

Moving a transformer is no simple task, and multiple departments supported the work, including Traction Power Engineering and Maintenance, Structural Engineering and Maintenance, Integration Engineering, Operations Liaisons, and System Access. In addition to Bishr, San, and Wong, the project was led by BART’s Zeeshan Ali, Adam Flynn, Michael Gibson, Andrew Holcomb, Ravi Raj, Andrew Shuck, Thaw Tin, Juan Ulloa, and Damon Williams.  

BART Traction Power Electrician Javier Morales works on high-voltage wiring for the transformer installation on May 28, 2025. 

Transformers are giant pieces of equipment, weighing about 30,000 pounds – about half the weight of one BART car. What goes on inside a transformer? Simply, power comes in from one end, and windings step down the voltage to convert it to the correct voltages. Three megawatts is the full-rated capacity of the transformer in question.  

The most cinematic moment of the process was using a crane to lift the transformer lay it on its concrete foundation. Bringing in a giant crane required months of legwork. A significant amount of vegetation needed clearing, then BART needed to secure permits with the Union Pacific Railroad, with which BART has an easement. 

Left to right: BART Senior Electrical Engineer Henry Nguyen and Junior Engineer Artem Morozov  work on the installation of the transformer on May 28, 2025.

It was a celebratory day when the crane made its triumphant appearance at the work site. After a semi-truck dropped off the crane and its counterweights, the rigging crew had to assemble it – it takes three hours! -- and used a giant forklift to roll it into place. Then the team had to wait for “the blanket,” A.K.A. the small window at night when trains aren’t running for passenger service. When at last the time came for the crane to lift and place the transformer, the team exhaled. In all, the lift took about thirty minutes. Planning out the moment, however, required months of labor.  

After connecting the primary 34.5kV cables, the Traction Power team energized the transformer and listened to the sweet sound of its internal winding heating up as energy surged through and trains zoomed past.  

Contractors on the transformer project included C3M, Clark, Cupertino, Azul, Biggie Crane, Rigging Rail Pros Flagging, CEL Soil Sampling, and Novoa testing. 

(November 3, 3:20pm update)

BART Police have arrested the suspect wanted in connection with a stabbing that occurred Saturday morning aboard an Antioch-bound train as it approached 24th Street/Mission Station. 34-year-old Jovany Portades was spotted by an alert Station Agent at Fruitvale Station Sunday at around 2pm. The Station Agent contacted BART Police who arrested the suspect without incident.

(November 3, 11am update)

BART Police investigators have identified the suspect wanted in connection with a stabbing that occured aboard an Antioch-bound train Saturday morning as it approached 24th Street/Mission Station. The suspect is 34-year-old Jovany Portades. One of BART's more than 4,000 surveillance cameras caught an initial iamge of suspect, which helped investigators to identify Portades. 

Anyone with information can call the BART Police Investigations anonymous tip line at (510) 464-7011. For urgent matters, call (510) 464-7000 or 9-1-1. Portades should be considered dangerous and members of the public should not approach him.

BART Police are asking for the public’s help in identifying a suspect in an assault on a train this morning.

The suspect is described as a possible Asian male, standing 5 feet 8 inches tall, weighing 160 pounds, with black braided hair wrapped in a knot on top of his head, a mustache, wearing a plain black jacket with orange liner, a black shirt with a large white logo, gray and black cargo style pants, brown and black boots, and carrying a black duffle bag. Investigators have released photos captured by one of BART’s more than 4,000 surveillance cameras.

The man is suspected of stabbing a 54-year-old woman in an unprovoked attack at about 8:10 a.m. aboard an Antioch-bound train as it approached 24th St./Mission Station.

The victim offboarded the train at 24th St./Mission Station and was assisted by a Station Agent until BART Police Officers arrived on the scene. The victim was transported to the hospital with serious injuries.

BART closed the 24th St/Mission Station from about 8:40 to 9:25 am to collect evidence.

Anyone with information can call the BART Police Investigations anonymous tip line at (510) 464-7011. For urgent matters, call (510) 464-7000 or 9-1-1. 

On Wednesday, August 2, 2023, One Book One BART hosted an author talk with Hua Hsu, the Pulitzer Prize-winning author of the first BART book club selection, Stay True, moderated by award-winning writer, historian, and thinker Jeff Chang. Watch a recording of the talk below. 

To keep up with all things BART book club, visit bart.gov/bookclub, and sign up for the mailing list at the top of that page. 

Stay tuned for the launch of our next book club on Monday, September 18, 2023

The next book selection is Oakland-based author Margaret Sexton Wilkerson's "On the Rooftop." Reese Witherspoon called the novel, set in San Francisco's Fillmore District, "an utterly original and brilliant story."

Questions? Ideas? Suggestions? Email [email protected]. 

We look forward to reading with you! 

One Book One BART – the official BART book club – invites members of the public to a free, virtual author talk with Hua Hsu, the author of the Pulitzer Prize-winning memoir and official book club selection, Stay True. The event, which marks the culmination of the Spring/Summer ‘23 One Book, One BART club, will be held on Zoom on Wednesday, August 2, at 4pm. A Q&A will follow the discussion.

The talk will be moderated by Jeff Chang, author of acclaimed book Can’t Stop Won’t Stop: A History of the Hip-Hop Generation, which was named one of the best U.S. nonfiction books of the last quarter century. His other books include Who We Be: A Cultural History of Race in Post Civil Rights America and We Gon' Be Alright: Notes On Race and Resegregation. Chang has received the American Book Award, the Asian American Literary Award, and the USA Ford Fellowship in Literature.

When: Wednesday, August 2, 4pm to 5pm

Join the meeting online via Zoom (no registration required): https://us06web.zoom.us/j/84824326758

For updates about upcoming One Book One BART events, including the launch of the Fall/Winter ’23 book club, visit bart.gov/bookclub.

Sign up for the One Book, One BART mailing list by visiting BART’s Profile Center and adding your information. On step 3 – “Manage Subscriptions” – click the caret next to “Other” and check the One Book, One BART box.   

Questions? Email [email protected].

BART’s reimagined schedule, which was rolled out on Monday, will be a boon for riders who want to travel around the Bay this weekend. The new service plan is designed to work for everyone, every day and means no BART rider will have to wait more than 20 minutes for a scheduled train no matter what hour of the day or what day of the week. 30-minute wait times between scheduled trains are now a thing of the past for BART on nights and weekends.

This Saturday and Sunday riders will notice the difference as they see more trains at their stations. Weekend service now has 20-minute service on all 5 lines until 9pm. And after 9pm 20-minute service on 3 lines will arrive at the same time every day of the week.

Examples of our boosted weekend service include:

*Richmond-MacArthur riders will now see 6 trains per hour instead of 4. 
*West Oakland-Daly City riders will get 12 trains per hour instead of 10 on Saturdays and 8 on Sundays. 
*Bay Fair-Berryessa riders will see their trains per hour increase from 4 to 6.
*Trains per hour are also increasing for our evening 3-line service, which begins every night at 9pm.

This Saturday is All Aboard Transit Day in celebration of Transit Month when everyone in the Bay Area is encouraged to try transit. Take as many transit trips as your heart desires this Saturday to help us beat the Saturday September 2022 ridership record. We will add up the total ridership for the day and report out to the public if we exceed the Saturday, September 2022 ridership, which was the highest ridership for a Saturday in September during Transit Month 2022.

On Saturday, BART will host "Meet the BART Anime Mascots" event at Powell Street Station from 2-6 pm. Take photos with the mascots, make buttons with staff, grab a prize from the BART capsule ball machine, and more! Come in cosplay and get a rare BART anime charm. The Link21 outreach team will also be there to talk about our project to build a second train crossing connecting Oakland and San Francisco. 

BART will also have special late-night service for the Ed Sheeran concert at Levi’s Stadium this Saturday. 

The new schedule, which began Monday, is already serving record numbers of riders. On Wednesday, BART carried 192,961 passengers – the most since the pandemic shelter-in-place orders were enacted in March 2020. Just a day before, Tuesday, September 12th, BART served 192,081 riders. The new schedule is responsive to post-pandemic commute patterns and ridership growth opportunities, with a new emphasis on weeknight and weekend service.