Congress·In Committee·H.R. 7864

Gateway Arch National Park: Boundary Expansion

Gateway Arch National Park Boundary Revision Act of 2026

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This bill would slightly increase the size of Gateway Arch National Park in St. Louis. It changes the park's official legal boundary from 100 acres to 102.18 acres.
Lawmakers from both parties in Missouri and Illinois are supporting this change. They want to update the park's legal records to match a new map made in 2023 that more accurately shows the park's land.
The extra two acres will help the National Park Service manage the site more effectively. It ensures that the government's paperwork matches the actual physical space the park occupies in the city.