Prior to April 28, 2008, the Blue Line split into two branches here. Trains to Forest Park continued west in the Congress Expressway, while the other trains took the Loomis Ramp to the Douglas branch to operate to 54th/Cermak.
Although the Loomis Ramp no longer is used for revenue service, it remains intact as the only track connection between the Blue Line and the rest of the system, allowing for non-revenue equipment moves. When construction or another means of traffic obstruction occurs on the Pink Line between Polk and Ashland, trains are routed via the Loomis Ramp to Racine, where they terminate.