I‑80 in San Francisco Closes This Weekend
- A section of Interstate 80 in San Francisco shut down for the weekend to allow Caltrans rehabilitation work and safety improvements. - Drivers should expect detours and heavier traffic on alternate routes through Saturday and Sunday during the closure. - Officials advised commuters to plan alternate routes and follow posted signage as crews complete repairs (nbcbayarea.com).
A 1.6-mile stretch of eastbound Interstate 80 in San Francisco is closed through early Monday for a weekend rebuild near the Bay Bridge. (dot.ca.gov) Caltrans shut the freeway between 17th Street and 4th Street at 11 p.m. Friday, April 17, and says it will reopen by 6 a.m. Monday, April 20. The closure also includes the southbound and northbound U.S. 101 connector ramps to eastbound I-80. (dot.ca.gov) NBC Bay Area reported the shutdown began Friday night and warned of heavy backups across SoMa, Mission Bay, and nearby streets as drivers divert around the work zone. Caltrans urged motorists to stay away from the area and use public transportation when possible. (nbcbayarea.com) The work is not a one-off patch. Caltrans said crews are doing structural and bridge-deck rehabilitation on the Central and Bayshore freeway viaducts, part of a two-year project that started in January 2026. (dot.ca.gov) That matters on this stretch because the elevated freeway carries traffic into downtown San Francisco and toward the San Francisco-Oakland Bay Bridge. Closing it for one weekend gives crews a longer window to place materials and repair the deck without reopening lanes between shifts. (nbcbayarea.com, dot.ca.gov) Caltrans said drivers coming from southbound U.S. 101 can detour via eastbound Cesar Chavez Street to northbound Third Street and then reconnect at eastbound I-80. Drivers from northbound U.S. 101 can use eastbound Ninth Street, southbound Division Street, and eastbound Seventh Street toward the freeway. (dot.ca.gov) The agency had planned a separate April 10-13 closure of the eastbound I-80 Fourth Street off-ramp, but canceled it because rain would have interfered with polyester concrete placement. That earlier delay pushed more attention onto this weekend’s longer closure window. (dot.ca.gov) As of Sunday, 511.org was directing Bay Area drivers to check live alerts for construction and traffic conditions before heading into San Francisco. By Monday morning, the test for commuters will be whether Caltrans can hand back one of the city’s busiest approach roads on schedule. (511.org, dot.ca.gov)
