From SFMTA:
Construction of the Central Subway is starting soon on 4th Street between Harrison and Berry in SoMa. Work in this area includes utility relocations, installation of train tracks on 4th Street and construction of a station at 4th and Brannan.
At this meeting, the Central Subway team will inform the community about what to expect and answer any questions you may have. Speakers include the lead engineer for this phase of construction and the Central Subway outreach team.