The U.S. Transportation Department announced it was pulling back $4 billion in funding for the project, weeks after signaling it would do so.

The Transportation Department put the railroad authority on notice in June, alleging it breached terms of its federal contracts.

The Trump administration officially terminated its funding of California’s 171-mile high speed rail segment in the state’s more sparsely populated Central Valley, citing an inability to complete the project by the 2033 deadline.