During the railroad's management by Edward H. Harriman plans to upgrade the Shasta Route were unveiled. But his death and the government's attempt to break up Southern Pacific's merger with Harriman's Union Pacific, followed by an attempt to subtract the Central Pacific from the SP, delayed construction. Not until 1927 was the new Cascade Line via Willamette Pass and Klamath Falls opened as the main route between the Bay Area and the Northwest.