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Draft EIR for Mexican Museum and 550‑foot tower sparks debate over shadow and traffic impacts
Summary
At a public hearing on the draft environmental impact report for the Mexican Museum and adjacent 550‑foot tower at 706 Mission, the Planning Commission heard testimony raising significant concerns about cumulative shadowing (notably on Union Square), AM traffic impacts, and pedestrian safety in Yerba Buena; arts groups and neighborhood advocates expressed support but urged further study and mitigation.
The Planning Commission opened the public hearing on the draft environmental impact report (EIR) for the proposed Mexican Museum and a 550‑foot residential tower at 706 Mission Street and took extensive public testimony focused on the draft EIR’s analysis of shadows, traffic and pedestrian impacts.
Planning staff summarized the draft EIR’s scope, noting the project would rehabilitate the Aronson Building, transfer the Jesse Square Garage parcel to the sponsor, and construct a new tower adjacent to the Aronson Building. Staff reported the draft EIR found significant and unavoidable cumulative shadow impacts—particularly on Union Square—and that certain circulation/access variants would produce significant and unavoidable traffic impacts. Staff emphasized this hearing is to receive comments on the adequacy of the draft EIR; project approval would follow certification of the final EIR.
Commenters included neighbors, technical consultants, and community groups. Concerns centered on the draft EIR’s limited AM‑peak traffic analysis, potential queueing and pickup/drop‑off conflicts on narrow alleys, and the cumulative pedestrian impacts across Yerba Buena and Fourth Street. Technical witnesses for neighbors argued some vehicle access variants were improperly modeled and that AM peak movements and critical turning movements merited additional analysis. Multiple witnesses urged the commission to require analysis of additional alternatives and cumulative pedestrian safety mitigation, including the long‑planned mid‑block pedestrian crossing between Mission and Jesse Square.
At the same time, proponents from arts and cultural organizations, including curators and Yerba Buena stakeholders, spoke in support of locating the Mexican Museum in Yerba Buena and said the project would complete an overdue cultural component for the district. Several speakers emphasized the social and economic benefits of adding cultural venues and housing to the area.
Commissioners noted many substantive comments and asked staff about the schedule for preparing the comments and responses document. Staff said written comments would be accepted through Aug. 13 and that the department would set a schedule for the comment‑and‑response process following receipt of full comment volumes. Commissioners also discussed the tension between the project’s public benefits and shadow impacts on Union Square, and several urged further study and alternatives analysis before final certification.
The hearing record remains open for written comments until the stated deadline; staff will prepare written responses and a revised final EIR as appropriate.
