Union City, CA

Union City BART is an operating regional station surrounded by a district still being completed. BART, Union City Transit, AC Transit, and Dumbarton Express buses already meet there, and roughly 1,700 homes have been built or entitled nearby. Offices totaling about 1.2 million square feet, an Altamont Corridor Express passenger hub, and Quarry Lakes Parkway remain planned rather than available. A new connection was under construction in 2026: an at-grade pedestrian crossing was creating an east entrance and free passage through the BART station toward retail west of the tracks. The crossing is also intended as a through-route between housing east of the tracks and shops on the west. Completion was expected by year's end, followed by railroad security testing before a possible early-2027 opening.

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Until then, the station's east side remained a construction site rather than a completed second entrance. The wider city inherited two older centers. Historic Alvarado sits on lower ground toward the bay near Alameda Creek; Decoto lies closer to the East Bay hills and the regional rail corridor. Agriculture, salt production, and food processing shaped Alvarado's economy. In 1869, Ebenezer Dyer established the first successful beet-sugar factory in the United States there. Decoto formed around the Central and Western Pacific railroads. John Horner's steamer The Union supplied an earlier use of the name that Alvarado and Decoto adopted when they incorporated together in 1959. The two areas still retain different street patterns, routes, and public institutions, keeping the municipal merger visible in current geography.

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Bay marshes, Alameda Creek, the East Bay hills, neighboring cities, and established transportation corridors limit the directions of growth. Three industrial parks occupy substantial land among residential sections, continuing a working history that later included steel and other manufacturing. Transportation, warehousing, professional services, retail, and service firms now accompany production work. More than 90 acres of former industrial and contaminated land around BART have been reused for the Station District. The project shifts part of Union City's center toward higher-density housing and transit, while older industrial areas and Union Landing's freeway-oriented shops and entertainment remain elsewhere. A cross-city trip still passes through places organized separately by creek, railroads, factories, BART, and Interstate 880.

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community activity keeps both founding towns visible. A Saturday farmers market meets in Historic Alvarado, placing food vendors in the former agricultural and beet-sugar center near Alameda Creek. On 11th Street in Decoto, Studio 11 offers exhibitions, classes, performances, and open-mic events, and a small historical museum preserves local records and artifacts. Holly Community Center and Mark Green Sports Center serve central neighborhoods, while entrances to the Alameda Creek Regional Trail lead toward parks and neighboring communities. The BART construction adds a new pedestrian connection between these established centers and the Station District. Market morning in Alvarado, an evening program at Studio 11, and a train departure use three different parts of a city created by joining two.