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It's also supposed to be completed by the 4th of July, 2026.  
Timeline and cost

Construction began in 2023 and is scheduled to conclude by July 2026. The $69 million budget comes from a combination of federal funds and private donations. The NPS anticipates that the museum will draw large crowds during the semiquincentennial and beyond, providing a sustainable return on investment through increased visitor spending and educational programming. Importantly, the memorial will remain open throughout construction, ensuring that travelers can continue to visit the statue and view the exterior of the monument while the undercroft is being transformed.