Work on this project has been substantially completed. Thank you to everyone for your support and patience while this much-needed work was done.
In late summer 2023, the San Francisco Municipal Transportation Agency (SFMTA) began an underground cable upgrade project on Mission Street to make the traction power system more reliable, robust and safer. The Mission Traction Power Improvement Project improves the 14 Mission and 14R Mission trolley services, including other Muni trolley lines on lower Mission and Market streets, and at Salesforce Transbay Transit Center.
- Completed
The eight-month construction included trenching in the middle of Mission Street from Anthony Street to between 4th and 5th streets, upgraded underground cables and feeder circuits. To take advantage of the construction window, we also upgraded six curb ramps to meet ADA (Americans with Disabilities Act) requirement.
The planning and execution of this project took into account how to minimize disruptions for businesses, neighbors and street users.
Measures taken to mitigate construction impacts:
- Muni bus service on Mission or across Mission was not impacted.
- Street remained open to traffic during construction with at least one traffic lane open in each direction on Mission Street.
- Sidewalks, bike lanes and loading zones near construction zones remained open.
- Very minimal parking impacts.
- Cable replacement work was completed at night and underground, which eliminated noise disruptions. The night work avoided disruptions for traffic, transit, residents and businesses.
Construction timeline:
- Start of Construction – Fall 2023
- Substantial Completion – Summer 2025
Thank you for your support and understanding while we completed this critical work to improve the Muni system.
