I-80 Bayshore Freeway Weekend Closure

San Francisco shut down a 1.6-mile stretch of eastbound Interstate 80 this weekend, closing the Bayshore Freeway from 17th Street to 4th Street until 6 a.m. Monday, April 20. (dot.ca.gov) The closure began at 11 p.m. Friday, April 17, and also blocked the connector ramps from northbound U.S. 101 at 17th Street and southbound U.S. 101 near Bryant Street. (dot.ca.gov) Caltrans said drivers heading toward the Bay Bridge from San Francisco should expect detours through city streets, including Division Street, King Street and The Embarcadero, before rejoining eastbound traffic. (nbcbayarea.com) The Bay Bridge itself remains open, but the downtown approach to it is pinched off, sending weekend traffic into SoMa, Mission Bay and South of Market surface streets. (kqed.org) The shutdown is tied to Caltrans’ “Fab Rehab” project, a multiyear rebuild of the Central Freeway and Bayshore Freeway viaducts near the U.S. 101 and Interstate 80 interchange. Caltrans says the structures are 71 years old. (dot.ca.gov) Caltrans said crews are replacing concrete and pavement, upgrading drainage, adding lighting and signs, and retrofitting bridge decks and supports on the elevated freeway. Overnight lane closures are scheduled to continue through October 2026. (dot.ca.gov) Officials urged people to use Bay Area Rapid Transit, Muni or ferries instead of driving, and 511 warned travelers to check live alerts for both highway and transit disruptions before leaving. (dot.ca.gov) (511.org) By Saturday, April 18, ABC7 reported heavy backups and business disruptions around the closure zone as freight traffic, airport trips and weekend drivers all funneled onto local streets. (abc7news.com) The freeway is scheduled to reopen early Monday, but the larger repair campaign will keep reshaping traffic through downtown San Francisco for months. (dot.ca.gov)