East Side forum highlights conflict over Project Marvel, as Nirenberg and Sakai dispute benefits and accountability

Project Marvel becomes a defining fault line in the Nirenberg–Sakai contest

A campaign forum on San Antonio’s East Side placed Project Marvel — the proposed downtown sports and entertainment district anchored by a new San Antonio Spurs arena — at the center of a widening political dispute between former Mayor Ron Nirenberg and Bexar County Judge Peter Sakai. The two clashed over what the plan would deliver for East Side residents, how decisions are being made, and the relationship between the downtown proposal and the future of the county-owned Freeman Coliseum grounds.

During the forum, Sakai said he does not support Project Marvel and argued it would not meaningfully benefit the East Side. Nirenberg challenged that stance by pointing to Sakai’s prior support for county action tied to the arena’s financing and questioned whether Sakai could credibly distance himself from the downtown plan after backing the ballot measure framework that helped advance it.

What Project Marvel includes and what remains unresolved

Project Marvel is a multi-component redevelopment proposal centered in the Hemisfair area. Plans under discussion have included a new Spurs arena, improvements to the Alamodome, expansion of the Henry B. González Convention Center, a new convention center hotel, conversion of the John H. Wood Jr. courthouse into an entertainment venue, a land bridge concept over Interstate 37 to improve connections between downtown and the East Side, and mixed-use private development. Public cost estimates and private investment commitments have varied as the city continues to refine the scope.

Major implementation questions remain open, including the final site plan, land control and acquisitions, infrastructure capacity, and detailed financing structure across city, county, and private partners. Separate planning and feasibility work is also underway on utilities and other enabling infrastructure that could be affected by new construction in the district.

Voter-approved county funding sets a backdrop for the debate

The political flashpoint is sharpened by the November 4, 2025 county election results. Bexar County voters approved Proposition B with just over 52% support, authorizing the county to contribute up to $311 million — or 25% of costs, whichever is lower — toward a downtown multipurpose arena designed primarily as the Spurs’ home. The measure relies on venue taxes largely paid by visitors, including hotel and rental car taxes, rather than property taxes.

• Proposition B: authorizes county participation up to the stated cap for the downtown arena.
• Proposition A: authorizes roughly $190 million-plus in improvements tied to the Frost Bank Center, Freeman Coliseum and rodeo grounds, aimed at expanding year-round use after a potential Spurs move.

East Side representation and process concerns move to the forefront

Beyond the question of whether Project Marvel is beneficial, the forum highlighted competing claims about public engagement and transparency. Nirenberg criticized the composition of advisory efforts tied to East Side interests, arguing key East Side elected officials were not included. Sakai countered by pointing to nondisclosure agreements used in redevelopment discussions, arguing secrecy has not been limited to any one level of government or committee.

With the county’s arena funding authorization now secured and multiple downtown components still evolving, the dispute is shifting from whether Project Marvel proceeds to how it proceeds — and who is positioned to influence outcomes for the East Side.

The forum underscored that the next phase of the debate will likely focus on enforceable community benefits, the long-term plan for the Freeman Coliseum area, and the financing and governance structures that determine how redevelopment gains and costs are distributed across San Antonio.