Union Station (Chicago) - Layout - Platforms and Tracks

Platforms and Tracks

Union Station is laid out with a double stub-end configuration, with a total of 24 tracks coming in to the station from either the north or south, with most terminating within the station. There is a pass-through track to allow movement between the north and south side. Between the north and south sides of the station is a passenger concourse. Passengers can walk through the concourse to get from any platform to any other without stairs or elevators. Odd-numbered tracks (1–17) are on the north half of the station, and even-numbered tracks (2–28) on the south half. The northern platforms are used for Amtrak services to Milwaukee and Seattle; and the Metra Milwaukee District West, Milwaukee District North and North Central Service lines; the southern platforms are used for the rest of the Amtrak and Metra services. Two station management structures – known as glasshouses – one on each side of the terminal, monitor train to track assignments and the flow of traffic in and out of the station. Actual oversight and control of switching and signalling is accomplished by two "train director" positions, one for each side of the station, located in the Amtrak control center in the headhouse of the station.

Inside the concourse are ticket counters for both Metra and Amtrak services, as well as three waiting rooms and a baggage claim for Amtrak passengers, a set of restrooms, and offices for Metra and Amtrak. The concourse also has a mezzanine level between platform and street level, containing a food court featuring local vendors as well as national chains.