BART Boost During Freeway Closure

BART carried far more riders during San Francisco’s April 17-20 Interstate 80 closure, as drivers shifted to trains while a key Bay Bridge approach was shut down. (bart.gov) The closure covered eastbound I-80 between 17th and 4th streets from 11 p.m. Friday, April 17, to 6 a.m. Monday, April 20, and also closed the northbound and southbound U.S. 101 connector ramps to eastbound I-80. Caltrans said the closed stretch was about 1.6 miles and urged people to use public transportation. (dot.ca.gov) BART said it logged 182,570 trips on Friday, April 17, up 16% from the previous Friday, then 139,700 trips on Saturday and 98,850 on Sunday, both up 46% week over week. Its daily ridership page lists nearly identical preliminary counts: 182,567 on April 17, 139,695 on April 18, and 98,845 on April 19. (bart.gov 1) (bart.gov 2) Across the three days, that added up to about 421,000 trips, roughly 31% more than the prior weekend. BART said it absorbed the increase while running its standard five-line weekend service. (bart.gov) The freeway shutdown was part of a two-year Caltrans rehabilitation project on the Central and Bayshore freeway viaducts, which the agency said are 71 years old. Crews used the closure for structural and bridge-deck work meant to extend the life of the corridor feeding the San Francisco-Oakland Bay Bridge. (dot.ca.gov) The spike came as BART was already climbing back from its pandemic slump. In March 2026, the system recorded 5,403,140 exits, its highest monthly ridership since the pandemic, with weekday averages topping 200,000 for the first time in that period. (bart.gov) BART said April ridership was running about 10% above the same point a year earlier. The agency has argued that these surges show the rail system’s value not just for office commutes, but for weekends, major events and transportation disruptions. (bart.gov) That argument lands in the middle of BART’s budget fight. The agency said ridership gains alone will not close a structural deficit of $350 million to $400 million, with a projected $376 million gap in fiscal year 2027. (bart.gov) For one weekend, the numbers turned an abstract transit case into a practical one: when the main freeway to the Bay Bridge narrowed, tens of thousands more people fit onto trains instead. (bart.gov)