Drivers who rely on 19th Avenue are in for a long, bumpy stretch before things get smoother. Caltrans crews are set to start repaving all six lanes of the corridor on Dec. 1, 2025, in a multistage project running from Lincoln Way at the western edge of Golden Gate Park down to Holloway Avenue by San Francisco State University. The job will cover roughly three driving miles, about 18.8 lane miles of pavement, and is expected to squeeze traffic on one of the city’s busiest north-south routes. Anyone traveling through the Sunset and nearby neighborhoods should brace for slower trips and intermittent lane reductions over the coming months.
According to Caltrans District 4, crews will break ground at Sloat Boulevard and work north toward Lincoln Way in block-by-block segments. The agency plans to start with parking-strip repaving, then move to full lane resurfacing in spring 2026, with the overall project scheduled to wrap up by December 2026. The same project page also includes work at the Park Presidio and California Street intersection.
As reported by the San Francisco Chronicle, the rehabilitation covers about 18.8 lane miles across roughly three driving miles, and Caltrans intends to keep at least one lane open in each direction throughout construction. The Chronicle notes that most daytime work is scheduled Monday through Friday from 7 a.m. to 3 p.m., with overnight paving planned at the California Street and Park Presidio intersection. Even with those lane controls, local officials told the paper they expect significant backups during commute hours.
Traffic and Transit Impacts
Caltrans warns that work will move in short segments and some bus stops may be temporarily relocated to make room for crews, so riders should keep an eye out for service notices and posted signs. In a press release, Caltrans District 4 says lane reductions will be staged so that one lane in each direction remains open, with most activity happening on weekdays between 7 a.m. and 3 p.m. and limited overnight paving at key intersections. The agency is urging drivers to plan alternate routes during peak times and to build extra minutes into their trips.
When To Avoid The Corridor
Caltrans recommends steering clear of 19th Avenue during peak commute windows, roughly 6 a.m. to 10 a.m. and 3 p.m. to 7 p.m., to cut down on delays. The San Francisco Chronicle reports that the 19th Avenue work is part of a broader multi-year Caltrans push to repair several major San Francisco corridors, including U.S. 101 and I-280. Neighbors and commuters can expect rolling closures, detour signs, and plenty of cones while crews are on site.
If you regularly travel this stretch, plan for extra time, check with your transit provider for any stop changes, and consult traffic maps or 511 for current conditions. The end result should be a much smoother ride, but for the next year or so, patience will be just as essential as a full tank of gas.
