[9] Originally, the 2nd level waiting room was connected to train platforms via an overhead walkway, but this design was never popular with travelers as they needed to climb a large number of stairs.

Escalators were added, but the Grand Hall was finally abandoned in favor of renovated ticketing and a waiting room on the ground floor (still in use today).

For example, the Rock Island Railroad's Twin Star Rocket from Minneapolis terminated at Fort Worth, not at Dallas.

[10][11] The last passenger train to serve Union Station before the inauguration of Amtrak, the Missouri Pacific Railroad's Texas Eagle, left on May 31, 1969.

With those improvements, Amtrak service began on March 14, 1974, with the Inter-American between St. Louis and Laredo; the train evolved into today's Texas Eagle.

[6] The station's upper-level waiting room was repurposed into meeting and convention space for the Hyatt Regency Dallas, which is connected via an underground walkway.

[15] In 1934, as part of the federally sponsored Public Works of Art Project, Jerry Bywaters and Alexander Hogue were granted the first commission in Texas to create a series of 10 murals depicting events in Dallas history.