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Chicago Union Station in July of 2013.

Photo of the new Union Station in Chicago taken in 1924. This was shortly before it opened in 1925.

Chicago Architectural Photographing Company

A postcard depiction of Chicago's "New" Union Depot, circa 1924.
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The Great Hall.

By vincent desjardins - originally posted to Flickr as Chicago (ILL) Union Station, great Hall, 1925, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=10887097

One of the two grand staircases, where famous movie scenes, such as in The Untouchables (1987), were filmed.

By Sean Lamb (User:Slambo) - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2543622

A postcard depiction of Chicago's "New" Union Depot, circa 1925.

Photo of the new Union Station in Chicago taken in 1924. This was shortly before it opened in 1925. Chicago Architectural Photographing Company
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Chicago Union Station in July of 2013.

By Thshriver - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=30769268

One of the two grand staircases, where famous movie scenes, such as in The Untouchables, were filmed.

Chicago Union Station
Chicago Union Station is a major railroad station that opened in 1925 in Chicago, Illinois, replacing an earlier station built in 1881. It is the only remaining intercity rail terminal in Chicago, and is the city's primary terminal for commuter trains. The station stands on the west side of the Chicago River between West Adams Street and West Jackson Boulevard, just outside the Chicago Loop. Including approach and storage tracks, it covers about nine and a half city blocks — mostly underground, buried beneath streets and skyscrapers.

Chicago Union Station is the fourth-busiest rail terminal in the United States, after Grand Central Terminal and Penn Station and Jamaica station in New York City. It is Amtrak's overall fourth-busiest station, and the busiest outside of its Northeast Corridor. It handles about 140,000 passengers on an average weekday (130,000 Metra riders and 10,000 Amtrak) and is one of Chicago's most iconic structures, reflecting the city's strong architectural heritage and historic achievements. It has Bedford limestone Beaux-Arts facades, massive Corinthian columns, marble floors, and a Great Hall, all highlighted by brass lamps. In 2011, its lighting system was replaced with more energy-efficient light bulbs and motion sensors, reducing the station's annual carbon emissions by 4 million tons. Custom steel lighting covers were added to top these safety/light towers, helping them blend in with the overall neoclassical style of the station.

Chicago Union Station was designated as one of America's "Great Places" in 2012 by the American Planning Association (APA). The program recognized the station as a "Great Public Space" for promoting social activity and reflecting local culture and history. In celebration of the 2018 Illinois Bicentennial, Union Station was selected as one of the Illinois 200 Great Places by the American Institute of Architects Illinois component (AIA Illinois).

Layout
Platforms and tracks
Union Station is laid out with a double stub-end configuration, with 10 tracks coming into the station from the north and 14 from the south. Unlike most of Amtrak's major stations, every train calling at Union Station either originates or terminates there; all passengers traveling through Chicago must change trains to reach their final destination. There are two through tracks to allow out-of-service equipment moves between the north and south side, including one with a platform to allow extra long trains to board. 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 platforms (1–19) are on the north half of the station, and even-numbered platforms (2–30) on the south half. The north tracks are used by Amtrak for the Hiawatha Service and the Empire Builder, and by Metra for the Milwaukee District West, Milwaukee District North, and North Central Service routes. The south tracks are used for all of the other 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 station's headhouse.

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.

Headhouse
Located west of Canal Street, Union Station's headhouse occupies an entire city block. At its center is the Great Hall, a 110-foot (34 m)-high atrium capped by a large barrel-vaulted skylight. Arrayed around the Great Hall are numerous smaller spaces containing restaurants and services, and a wide passageway leading to the concourse. Above the headhouse are several floors of office space, currently used by Amtrak. Original plans called for many more floors of offices, forming a skyscraper above the Great Hall. This was never completed, although the plan has been revived in recent years.

Entrances
Numerous entrances provide access to Union Station's underground platform level. The main entrance is on Canal Street opposite the headhouse, but passengers can also reach the platforms directly from the headhouse via an underground passageway. Two secondary entrances are located in Riverside Plaza near the Jackson Boulevard and Adams Street bridges. On Madison Street, directly across from Ogilvie Transportation Center, are a set of entrances to the north platforms.

History
The current Union Station is the second by that name built in Chicago, and possibly the third rail station to occupy the site. The need for a single, centralized station was an important political topic in 19th and 20th-century Chicago, as various competing railroads had built a series of terminal stations. The numerous stations and associated railyards and tracks surrounded the city's central business district, the Loop, and threatened its expansion. The various stations also made travel difficult for through-travelers, many of whom had to make inconvenient, long, and unpleasant transfers from one station to another through the Loop.

On December 25, 1858, the Pittsburgh, Fort Wayne and Chicago Railroad opened as far as Van Buren Street in Chicago. It built the first station at what would eventually become today's Union Station on the west bank of the Chicago River.

Union Depot
On April 7, 1874 five railroads agreed to build and share a union station just north of the original Pittsburgh, Fort Wayne, and Chicago Railroad station site at Van Buren Street. These railroads were:

Pennsylvania Company (a subsidiary of the Pennsylvania Railroad)
Chicago, Burlington and Quincy Railroad
Michigan Central Railroad
Chicago and Alton Railroad
Chicago, Milwaukee and St. Paul Railway (
The Milwaukee Road)

The Michigan Central, which had previously been using the Illinois Central Railroad's Great Central Station, soon decided to back out of the agreement, and continued to use the Illinois Central Depot. The Chicago and North Western Railway, not part of the original agreement, considered switching to the new station from its Wells Street Station but deferred instead. In 1911 it built the Chicago and North Western Passenger Terminal for its operations.

The remaining four original companies used the station when it opened in 1881. The headhouse of the Union Depot, a narrow building, fronted onto Canal Street and stretched from Madison Street to Adams Street. Tracks led into the station from the south, and platforms occupied a strip of land between the back of the headhouse and the bank of the Chicago River. South of the station, Adams, Jackson, and Van Buren Streets rose over the tracks and the river on bridges.

Union Station
Planning and construction
Growth in passenger traffic, as well as a civic push to consolidate numerous railroad terminals, led to a proposal for an enlarged Union Station on the same site. The second Union Station would be built by the Chicago Union Station Company. This was a new company formed by all the railroads that had used the first station, save for the Chicago and Alton, which became a tenant in the new station.

The architect was Daniel Burnham of Chicago, who died before its completion. The firm of Graham, Anderson, Probst and White completed the work to Burnham's designs. Work began on the massive project in 1913, and the station finally opened twelve years later on May 16, 1925; some viaduct work continued into 1927. The construction cost was projected to be $65 million, but ended up costing $75 million. Construction was delayed several times by World War I, labor shortages and strikes. The construction of the station also involved the demolition and relocation of some previously existing buildings such as the Butler Brother's Warehouse along the Chicago River. It is one of about a dozen monumental Beaux-Arts railroad stations that were among the most complicated architectural programs of the era called the "American Renaissance", combining traditional architecture with engineering technology, circulation patterning and urban planning.

Union Station was hailed as an outstanding achievement in railroad facility planning. The station's ornate Beaux-Arts main waiting room, the "Great Hall", is one of the great interior public spaces in the United States. It has vaulted skylight, statuary, and connecting lobbies, staircases, and balconies. Enormous wooden benches were arranged in the room for travelers to wait for connections, and two specially-designed underground taxicab drives were built to protect travelers from the weather. The station featured a large, open concourse along the river, with massive steel arches holding up the roof, and several stairways leading passengers down to the platform.

Air rights
The large amount of land above the tracks and platforms has tempted property owners and developers. Possibly inspired by the "Terminal City" built atop New York's Grand Central Terminal, Chicago moved to develop the air rights above Union Station's tracks. The first building to be built was that of the Chicago Daily News in 1929. Designed in the Art Deco style, it was the first structure to add a public promenade along the river, which would be named "Riverside Plaza". Soon after, in 1932, the new Chicago Main Post Office opened. Also in the Art Deco style, it was a gigantic structure that occupied two full city blocks.

The Great Depression and subsequent World War II halted development, but in the 1960s, work began on Gateway Center, a Modernist complex of five buildings. Only the first four were built, and construction lasted into the 1980s through several economic cycles.

In 1990 the Morton International Building opened. Now named for Boeing, it is the tallest building yet to be constructed over the tracks. It received awards for its innovative engineering. With the construction of River Point beginning in 2013 and 150 North Riverside beginning in 2014, the entire length of the tracks from Union Station north to Fulton Street and south to Polk Street is enclosed by overhead development.

Wartime, decline, and resurgence
During World War II, Union Station was at its busiest, handling as many as 300 trains and 100,000 passengers daily, many of them soldiers. After the war, the growth of highway construction and private ownership of automobiles caused a severe decline in American passenger-rail ridership, including at Union Station.

In 1969, the expansive Beaux-Arts concourse at Union Station was demolished to make way for a modern office tower. A new, modernized (but smaller) concourse was constructed beneath the tower. In 1970, Amtrak was formed. In 1984, it bought out the last partner railroad of the Chicago Union Station Company.

In 1991, Lucien Lagrange Associates renovated the concourse, including the Great Hall and its skylight, which had been blacked-out since World War II. Restoration of Union Station continues. Numerous spaces within the station have yet to be renovated, and many sit unused, especially within the headhouse.

After the September 11 attacks, Amtrak closed the pair of taxicab drives in the name of security. Passenger traffic has increased and is exceeding the design capacity of 1991 renovation. The planned high-speed trains of the proposed Chicago Hub Network are expected to further boost traffic, and numerous improvements have been planned to accommodate it.

In 2010, Amtrak (the current owners of the Chicago Union Station Company) announced plans to air-condition the Great Hall for the first time since the 1960s. That year a Chicago Tribune investigation revealed high levels of diesel soot on the underground platforms of Union Station. Metra established an "Emissions Task Force" to study this problem and recommend solutions to improve air quality in the underground areas.

Union Station remains a busy place: in 2016, about 120,000 people used the station each day, up from 54,000 people in 2007. Of those passengers, 90% ride the Metra commuter rail lines. Union Station currently serves more than 300 trains per day: all Amtrak intercity trains to Chicago as well as five Metra commuter rail lines.

In June 2015, Amtrak announced that it would renovate the station, including opening up long-closed spaces and replacing the worn staircases with marble from the original quarry near Rome. In 2018, restoration of the Great Hall, including restoring original detailing and rebuilding the large skylight was completed, increasing natural light by 50-60%.

Services
Union Station was served by lines in all directions even before Penn Central and Amtrak consolidated the downtown terminals.

Services today

Blue Water (Chicago – Port Huron)
California Zephyr (Chicago – San Francisco)
Capitol Limited (Chicago – Washington DC via Cleveland and Pittsburgh)
Cardinal (Chicago – New York via Indianapolis, Cincinnati and Washington DC)
City of New Orleans (Chicago – New Orleans)
Empire Builder (Chicago – Portland/Seattle)
Hiawatha Service (Chicago – Milwaukee)
Hoosier State (Chicago – Indianapolis)
Illini (Chicago – Carbondale, Illinois)
Illinois Zephyr (Chicago – Quincy, Illinois)
Lake Shore Limited (Chicago – New York/Boston)
Lincoln Service (Chicago – St Louis)
Pere Marquette (Chicago – Grand Rapids)
Southwest Chief (Chicago – Los Angeles via Kansas City)
Texas Eagle (Chicago – San Antonio/Los Angeles)
Wolverine (Chicago – Metro Detroit)

Historical services
Union Station served as a terminal for the following lines and intercity trains:

Chicago and Alton Railroad – only a tenant, later part of the Gulf, Mobile and Ohio Railroad
Chicago, Burlington and Quincy Railroad (Burlington Route)
Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) – The station housed its corporate offices
Pittsburgh, Fort Wayne and Chicago Railway (PRR)
Pittsburgh, Cincinnati, Chicago and St. Louis Railroad (Panhandle) (moved to use the PFW&C approach after April 23, 1917)
Penn Central Transportation Company (former services of the New York Central Railroad and Michigan Central Railroad) (moved from LaSalle Street Station October 27, 1968)
Amtrak (began May 1, 1971, moved from Dearborn Station May 2, 1971 and Central Station March 6, 1972 (Floridian moved January 23, 1972); Amtrak's Calumet and Indiana Connection commuter trains also ran into Union Station

Pre-Amtrak major trains

Burlington Route
California Zephyr
Denver Zephyr
Twin Cities Zephyr
American Royal Zephyr
Kansas City Zephyr
Western Star

Chicago and Alton/Gulf, Mobile and Ohio
Alton Limited
Abraham Lincoln
Ann Rutledge
Midnight Special

Milwaukee Road
The Arrow

Twin Cities Hiawatha
Midwest Hiawatha
Pioneer Limited
Olympian
Columbian
Olympian Hiawatha
City of San Francisco
City of Los Angeles
City of Portland
Challenger
Sioux

Pennsylvania
The Admiral
Broadway Limited
The General
Cincinnati Daylight Express
The Fort Pitt
Pennsylvania Limited
Pennsylvanian
Manhattan Limited
South Wind
Gotham Limited

Great Northern Railway
Empire Builder
Western Star

Northern Pacific Railroad
North Coast Limited
Mainstreeter

Some of these trains and their names have survived to present Amtrak services, such as the Empire Builder, the California Zephyr, and the Hiawatha.

The name Ann Rutledge was used by Amtrak as a Chicago-St. Louis-Kansas City route until a name and service consolidation in 2009. There is also a Lincoln Service that operates in Illinois.

Connections
Local rail service
Unlike other major American intercity/commuter rail hubs – such as Grand Central Terminal and Penn Station in New York, 30th Street Station in Philadelphia, South Station in Boston, and Union Station in Los Angeles – Union Station does not have any direct connection to local rapid transit service. However, there are several rapid transit stations within walking distance of Union Station.

CTA Brown, Orange, Pink, and Purple Lines: Quincy (3 Blocks east of Station); CTA Blue Line: Clinton

Local bus service
Numerous local bus lines stop directly at Union Station.

CTA Buses
1 Bronzeville/Union Station
7 Harrison
J14 Jeffery Jump (Madison Entrance)
19 United Center Express (Madison Entrance)
28 Stony Island
56 Milwaukee
60 Blue Island/26th (Owl Service)
120 Ogilvie/Streeterville Express (Madison Entrance)
121 Union/Streeterville Express
124 Navy Pier
125 Water Tower Express
126 Jackson
128 Soldier Field Express (Game Day Only)
130 Museum Campus (Summer Service Only)
151 Sheridan
156 LaSalle
157 Streeterville/Taylor
192 University of Chicago Hospitals Express

Pace Buses
755 Plainfield/IMD/West Loop Express

Future plans
A public meeting was held in December 2011 to discuss the future goals and designs of Union Station, with ideas being exchanged on how the station can accommodate the expected 40 percent growth in passengers by 2040. The results of this dialogue were incorporated into the May 2012 Chicago Union Station Master Plan Study. The study, led by the Chicago Department of Transportation (CDOT), in collaboration of Amtrak (station owner), Metra (station's primary tenant), and other local and federal organizations, calls for increasing the station's capacity and quality of service. According to the City of Chicago's website on the study, short-term improvements call for improving station entrances and expanding waiting rooms, as well as enhancing bus lanes on Clinton and Canal Streets and creating a bus terminal on Jackson Boulevard between Canal and Clinton. For the medium-term (5- to 10-year horizon), ideas include widening commuter platforms, using non-utilized mail platforms (including an extra-long through platform) for intercity passenger trains, adding more through tracks and platforms, reorganizing facilities for better capacity and flow, increasing height clearances of the tracks, and improving street access to and from the station. Long-term, proposals include increasing capacity and improving the ambiance of the station by significantly expanding or replacing station facilities in the 200 or 300 blocks of South Canal Street. Adding track and platform capacity along Clinton Street or Canal Street are also analyzed.

CTA Transit Center
In September 2016, a Chicago Transit Authority bus transit center opened adjacent to the Union Station parking garage, and bordered by Canal to the east, Clinton to the west, and Jackson to the north. The new off-street bus transit center serves CTA buses. The center is on land that had been occupied by a surface parking lot. It features an elevator and stairway to the Amtrak underground pedestrian tunnel, allowing commuters to pass between Union Station and the bus staging area without crossing at street level.

Chicago Union Station Overview
Location: 225 South Canal Street, Chicago, IL 60606
Coordinates: 41.87864°N 87.64025°W
Owned by: CUST (Amtrak)
Tracks: 14 (South Concourse); 10 (North Concourse)
Connections: Amtrak Thruway Motorcoach; CTA "L" Lines: Connect at Quincy and Clinton stations; CTA Buses; Pace Buses;  Megabus
Construction
Parking: Yes; paid
Disabled access: Yes
Other information
Station code: CHI
Fare zone: A (Metra only)
History
Opened: 1925
Traffic: Passengers (2017) 3,388,051
Chicago Landmark Designated: May 1, 2002

See also:

Historic Stations

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The Great Hall.

The first Union Passenger Depot was also an impressive structure, circa 1885.

Public Domain, https://commons.wikimedia.org/w/index.php?curid=329015

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The first Union Passenger Depot was also an impressive structure, circa 1885.
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