Muni is rebuilding the bus yard at 2500 Mariposa Street. Bryant Street, 17th Street, Hampshire Street and Mariposa Street bound the block. SFMTA states that construction has begun and runs through 2030. A guided walk or ride that crosses Potrero Hill from the Mission now passes a four-year work zone.
The work zone and its edges
SFMTA publishes the crew hours for the whole job. Work runs primarily from 7:00 a.m. to 8:00 p.m., Monday through Friday. Overnight work runs from 11:00 p.m. to 4:00 a.m., Monday through Friday. The agency calls the overnight work intermittent. Weekend work may occur intermittently. SFMTA states that noise is expected.
The agency asks travelers to expect temporary lane shifts on the blocks around the site. Signage and cones mark each work zone. Temporary parking restrictions apply inside an active work zone.
Hours a group has to plan around
A late itinerary meets the night window. The overnight band runs 11:00 p.m. to 4:00 a.m. from Monday through Friday. SFMTA calls that work intermittent. The band still overlaps the back end of a dinner-based group evening in the Mission.
A morning start meets the 7:00 a.m. opening. A group staged on Mariposa Street at 7:15 a.m. stands inside a marked work zone. Move the staging point off the frontage.
Mariposa excavation and night wire work
SFMTA publishes dated traffic notices for the project. The notice of 15 October 2026 lists excavation on Mariposa Street between Hampshire and Bryant streets from Thursday 15 October through Wednesday 21 October.
The notice of 8 October 2026 lists overhead wire removal at intersections around the site during night hours from 8 through 14 October. Excavation that week ran on Hampshire Street at Mariposa Street and on Mariposa Street between Hampshire and Bryant streets.
The notice of 1 October 2026 lists overhead wire removal from 11 p.m. to 4 a.m. from 1 through 7 October. That work produced temporary lane shifts along Mariposa, Bryant and 17th streets.
Excavation and wire removal move week to week. Read the current notice against the departure date.
17th Street gets the protected lanes
The project installs protected and widened Class IV bike lanes on the north and south sides of 17th Street between Bryant and Hampshire streets. New two-foot concrete barriers separate the lanes. The agency states that the lanes measure at least five feet, and six feet in most areas.
The existing bus entrance on 17th Street comes out. Parking comes off the north side of the block to make room for the lanes.
A group riding 17th Street today rides a worksite. The barrier-separated lanes arrive with the finished facility.
Coach staging the record omits
SFMTA publishes no coach staging plan and no set-down plan for 17th Street or Mariposa Street. The record carries lane shifts, marked work zones and temporary parking restrictions. It carries nothing on coach movement.
Read that gap into the plan. Hold the coach stop off the frontage blocks. Keep the driver clear of an active work zone. The finished site carries no residential parking and no public parking.
Walking in from Franklin Square
The block faces Franklin Square across 17th Street. Input from the Friends of Franklin Square produced a public restroom at 17th and Bryant streets, across from the children's playground at the square.
Two retail spaces are planned. One sits at Bryant and Mariposa streets, across from the KQED headquarters. The other sits at 17th and Bryant streets, across from the playground. Vendor kiosk spaces are proposed along 17th Street. SFMTA expects commercial leasing to begin in late 2029, so none of it serves an itinerary in 2026 or 2027.
Muni lines serving the block
The routes that ran out of Potrero Yard serve the surrounding blocks. They are the 5 Fulton, 5R Fulton Rapid, 6 Haight/Parnassus, 14 Mission, 22 Fillmore, 30 Stockton and 49 Van Ness/Mission. SFMTA closed the yard in February 2026 and moved its operations and maintenance work to other divisions. The 5 Fulton and 5R Fulton Rapid now run a mix of 40-foot and 60-foot buses. The 14 Mission runs every eight minutes on weekends.
SFMTA schedules a virtual community construction update for Wednesday 21 October at 5:30 p.m. The contractor Webcor presents construction detail for the current and coming phases. The traffic notices post to the project page each week.
Demolition of the yard is expected to start in early 2027. The demolition filing for the two-story building carries a September 2026 date. A group with a standing route through the block should re-check the notice in January.