Interstate 90 in Illinois
|Maintained by ISTHA, IDOT, and SCC|
|Length:||107.82 mi (173.52 km)|
|West end:||I-39 / I-90 at Wisconsin state line|
|East end:||I-90 / Ind. Toll Rd. at Indiana state line|
Interstate 90 (I-90) in the U.S. state of Illinois runs roughly northwest-to-southeast through the northern part of the state, from the Wisconsin state line near Rockford to the Indiana state line at Chicago. I-90 traverses 108 miles (174 km) through a variety of settings, from farmland west of the Fox River Valley through the medium-density suburban west of O'Hare International Airport, through downtown Chicago, and through the heart of the industrial southeast side of Chicago before entering Indiana.
I-90 comprises several named highways. The Interstate runs along the Jane Addams Memorial Tollway from Rockford to O'Hare Airport, the Kennedy Expressway runs from O'Hare to the Chicago Loop, the Dan Ryan Expressway from the Loop to the Chicago Skyway, and the Skyway to the Indiana state line. The Jane Addams and Chicago Skyway are toll roads maintained by the Illinois State Toll Highway Authority and Skyway Concession Company, respectively. The remainder of the highway is maintained by the Illinois Department of Transportation.
The Chicago Skyway, also known as Chicago Skyway Toll Bridge System, is a 7.8-mile-long (12.6 km) toll road in Chicago carrying I-90 from the Indiana Toll Road to the Dan Ryan Expressway on Chicago's South Side. The main feature of the Skyway is a 1⁄2-mile-long (0.80 km) steel truss bridge, known as the "High Bridge". The toll bridge spans the Calumet River and Calumet Harbor, a major harbor for industrial ships. The main span is 650 feet (200 m) long, provides for 125 feet (38 m) of vertical clearance, and is the highest road in Chicago.
The Jane Addams Tollway was built in the late 1950s and early 1960s as the Northwest Tollway. It was renamed in 2007 after Addams, the Nobel laureate and founder of the Settlement House movement in the United States. Between 2001 and 2004, authorities spent $250 million to rebuild much of the Chicago Skyway.
Route description 
Interstate 90 enters from Wisconsin with I-39. At the U.S. Route 51 (US 51) exit, I-39/90 becomes the Jane Addams Memorial Tollway. The two Interstates run south to Rockford, where I-39 continues as a freeway south to La Salle–Peru. I-90 continues southeast along the tollway through the Chicago area. In Schaumburg, I-90 meets the western end of I-290, the only loop from I-90 in Illinois.
I-90 passes O'Hare International Airport, where I-190, the only spur of I-90 in Illinois, branches west to the airport terminals. I-90 continues southeast as the Kennedy Expressway and is later joined with eastbound I-94; westbound I-94 runs on the Edens Expressway. I-90 and I-94 then pass through the city, intersecting the eastern end of I-290 just west of the Chicago Loop. South of I-290, the highway is given the name of the Dan Ryan Expressway.
In Chicago's South Side, I-90 splits off from I-94 and becomes the Chicago Skyway, again becoming a toll road. I-90 then runs directly southeast to the Indiana state line, and becomes the Indiana Toll Road at the state line.
Often confusing to non-residents is the direction system for I-90/94, in which signs that say "I-90/94 West" go north/northwest and signs that say "I-90/94 East" go south/southeast. This naming system is due to the overall direction of the expressway. I-90/94 West goes north, splits into I-94 and I-90, continues north to Wisconsin, and then goes west, I-90 going to Seattle. I-90/94 East goes south, splitting into two pieces, and then turns northeast, I-90 ending in Boston.
|Length:||7.49 mi (12.05 km)|
Historically, the Chicago Skyway was signed as, and was widely considered to be part of, I-90 from the mid-1960s forward (after I-90 in this area had been swapped with I-94). However, around 1999, the city of Chicago realized they had never received official approval to designate the Skyway as I-90. The city subsequently replaced most of the "I-90" signage with "TO I-90/I-94" signage. However, the Illinois DOT has always and continues to report the Skyway as part of the Interstate system, and the Federal Highway Administration apparently still considers the Chicago Skyway an official part of I-90.
The Skyway's official name, referring to it as a "toll bridge" rather than a "toll road", is the result of a legal quirk. At the time of its construction, the city charter of Chicago did not provide the authority to construct a toll road. However, the city could build toll bridges, and it was found that there was no limit to the length of the approaches to the bridge. Therefore, the Skyway is technically a toll bridge with a six-mile-long approach. This also is part of the reason that there are no exits available until after one has crossed the bridge and paid the toll.
Golden Corridor 
From O'Hare to Huntley, the region around the Jane Addams Tollway is sometimes referred to as the "Golden Corridor", due to the proximity of commercial and business activity located along the corridor in Northwest Suburban Chicago. Several Fortune 500 companies, large malls, hotels, entertainment and exhibition facilities, restaurants, and retailers are located along the corridor.
Along the Jane Addams Tollway, there are four mainline toll barriers in each direction – two split plazas and two full plazas. The barriers are located around the O'Hare International Airport area (River Road eastbound and Devon Avenue westbound), in Elgin, near Marengo (Eastbound), in Belvidere (Westbound), and in South Beloit. I-39 travelers exiting or entering at Rockford paid at the Cherry Valley toll plaza, but that toll plaza has been decommissioned southbound in 2003 and northbound in 2004 due to traffic congestion. In February 2006, the Marengo westbound and the Belvidere eastbound toll plazas were removed. Two two-toll plazas near O'Hare and the one in Elgin each charge cash tolls of 80 cents (as of January 1, 2005) and I-Pass tolls of 40 cents for a 2-axle passenger vehicle. The South Beloit toll plaza near the Illinois and Wisconsin state line is $1.00 (50 cents for I-Pass users). Eastbound traffic does not pay a toll at Belvidere because of the removal of the eastbound Belvidere plaza, but pays $1.60 at Marengo (I-Pass users pay $0.80). On the other hand, westbound traffic pays no toll at Marengo but pays $1.60 at Belvidere (I-PASS users pay $0.80). This change was done to accommodate open road tolling construction. Originally, a ticket system was used to compute tolls on the segment between Beloit and Elgin with each driver receiving a Hollerith card upon entering and paying upon exiting, but it was replaced with a cash barrier system in the late 1970s. It was the only portion of the Illinois Tollways to use a ticket system. Remnants of the old system can still be seen at several interchanges on the system including at the State Street exit near Rockford.
The current rate for passenger cars and other two axle vehicles on the Chicago Skyway is $4.00; vehicles with more axles pay higher rates. A discount is given during the overnight hours for vehicles with three or more axles.
There are two oases on the Jane Addams Tollway—one at Belvidere and one in Des Plaines near O'Hare. Both are over-highway oases. There is also a welcome center south of Beloit, Wisconsin, that is located on the IDOT portion of the highway between the border with Wisconsin and Illinois tollway control. At the Chicago Skyway's toll plaza, there is a McDonald's at highway grade in the road's median.
Jane Addams Tollway 
The 76-mile (122 km) Northwest Tollway portion of I-90 opened on August 20, 1958. Prior to the opening, the first vehicle to officially travel the new roadway was a covered wagon navigated by local resident John Madsen who took 5 days to make the journey.
On September 7, 2007, the Northwest Tollway was renamed the Jane Addams Memorial Tollway after Jane Addams, the Nobel Peace Prize winner and founder of the Settlement House movement in the United States.
Chicago Skyway 
The Chicago Skyway was originally known as the Calumet Skyway. It cost $101 million (1958, $791 million in 2011) to construct and took about 34 months to build. Nearly eight miles of elevated roadway, the Chicago Skyway was originally built as a shortcut from State Street, a major north-south street on Chicago's South Side that serves the Loop, to the steel mills on the Southeast to the Indiana state line where the Indiana Toll Road begins. Later, when the Dan Ryan Expressway opened, the Chicago Skyway was extended west to connect to it. There are only two eastbound exits east of the toll barrier, whereas there are four westbound exits west of the toll barrier. The Chicago Skyway opened to traffic on April 16, 1958.
In the 1960s, the newly constructed Dan Ryan Expressway and the neighboring Calumet Expressway, Kingery Expressway and Borman Expressway provided free alternatives to the tollway, and the Skyway became much less used. As a result, from the 1970s through the early 1990s, the Skyway was unable to repay revenue bonds used in its construction.
Traffic volumes have rebounded in recent years, (to 47,700 vehicles per day) partially because of the construction of casinos in Northwest Indiana, along with re-construction of the Dan Ryan, Kingery and Borman Expressways. The city of Chicago claims a record number of motorists used the Skyway in 2002.
In 2003 and 2004, the city of Chicago initiated a $250 million project to rehabilitate and widen the Skyway. The project involved extensive work on the cantilever span and its approaches that included replacing the bridge's structural steel, rebuilding the piers that support the structure, and reconstructing the bridge deck. Because the city of Chicago required the Skyway to remain open during construction, engineers had to construct temporary bridge piers that would bear the load of the bridge and its traffic while new piers were built. Once ready, the city of Chicago partnered with Enerpac company to complete a complex lift system. The bridge was lifted up onto the temporary piers using Enerpac 600 ton hydraulic jacks, the old piers were removed, and new ones were built. Crews also devised innovative methods for replacing the bridge's structural steel, replacing steel members one at a time. This process involved installing hydraulic chords around the component to be replaced. The bridge load was then transferred to the hydraulic chord, the steel member was removed and a new steel member was then installed. 
Recently, major construction on both the Kingery and Borman expressways has increased traffic on the Skyway, as well as the presence of riverboat casinos in Hammond and East Chicago, Indiana. In June 2005, the Skyway became compatible with electronic toll collection, with users now able to pay tolls using I-PASS, I-Zoom, or E-ZPass transponders. There is no discount for using a transponder.
The city of Chicago's Department of Streets and Sanitation formerly maintained the Chicago Skyway Toll Bridge System. A transaction that gave the city of Chicago a $1.83 billion dollar cash infusion leased the Skyway to the Skyway Concession Company (SCC), a joint-venture between the Australian Macquarie Infrastructure Group and Spanish Cintra Concesiones de Infraestructuras de Transporte S.A., which assumed operations on the Skyway on a 99–year operating lease. SCC will be responsible for all operating and maintenance costs of the Skyway but has the right to all toll and concession revenue. The Triple-A bond insurer Financial Security Assurance Inc. (FSA) has guaranteed $1.4 billion of senior bonds to provide long-term funding for the privately operated Chicago Skyway. On June 30, 2006, this same joint-venture assumed responsibility for operating and maintaining the adjacent Indiana East–West Toll Road for $3.8 billion. The agreement between SCC and the city of Chicago marked the first time an existing toll road was moved from public to private operation in the United States.
Exit list 
Exits along the Jane Addams Memorial Tollway and Chicago Skyway are unnumbered.
||South Beloit||0.00||0.00||I-39 north / I-90 west||Continuation into Wisconsin|
|0.29||0.47||1||US 51 north / IL 75 – South Beloit||West end of US 51 overlap|
|Rockton||2.71||4.36||3|| CR 9 (Rockton Road) – Roscoe
Jane Addams Memorial Tollway begins
|3.60||5.79||South Beloit toll plaza|
|Rockford||8.94||14.39||IL 173 (West Lane Road) – Machesney Park|
|12.47||20.07||East Riverside Boulevard – Loves Park|
US 20 Bus. (State Street)
|17.40||28.00||I-39 south / US 51 south to US 20 – Rockford||West end of I-39 / US 51 overlap|
||Belvidere||20.40||32.83||Irene Road||Westbound exit only; free exit|
|22.93||36.90||Belvidere toll plaza (westbound)|
|23.51||37.84||Belvidere Tollway Oasis|
|24.62||39.62||Genoa Road – Belvidere|
||Riley||37.39||60.17||Marengo toll plaza (eastbound)|
||Hampshire||41.54||66.85||US 20 – Marengo, Hampshire|
|Huntley||46.02||74.06||IL 47 – Woodstock||Westbound exit and eastbound entrance only|
|53.42||85.97||Elgin toll plaza|
|Hoffman Estates||57.77||92.97||Beverly Road||Westbound exit and eastbound entrance only|
|61.81||99.47||Barrington Road||Westbound exit and eastbound entrance only|
|Schaumburg||65.19||104.91||Roselle Road||Westbound exit and eastbound entrance only|
|67.84||109.18||I-290 east (Eisenhower Expressway) / IL 53 – Chicago, West Suburbs, Northwest Suburbs|
|Arlington Heights||70.47||113.41||Arlington Heights Road|
|Des Plaines||73.25||117.88||Elmhurst Road||Westbound exit and eastbound entrance only|
|74.01||119.11||Des Plaines Tollway Oasis|
|75.80||121.99||IL 72 / Lee Street||Westbound exit and eastbound entrance only|
|Rosemont||76.75||123.52||Devon Avenue toll plaza (westbound)|
|77.03||123.97||IL 72 / Devon Avenue||Westbound entrance only|
|78|| I-190 west (Kennedy Expressway) – O'Hare Airport
I-294 (Tri-State Tollway) – Indiana, Milwaukee
|Exit number signed westbound only|
|78.20||125.85||River Road toll plaza (eastbound)|
|Chicago||78.49||126.32||Jane Addams Memorial Tollway ends||I-90 continues as Kennedy Expressway|
|79.28||127.59||79||IL 171 south (Cumberland Avenue)||Signed as exits 79A (south) and 79B (north)|
|79.99||128.73||80||Canfield Road||Westbound exit and eastbound entrance only|
|80.84||130.10||81A||IL 43 (Harlem Avenue)|
|81.14||130.58||81B||Sayre Avenue||Westbound exit and eastbound entrance only|
|81.85||131.72||82A||Nagle Avenue||No westbound exit|
|82.09||132.11||82B||Bryn Mawr Avenue||Westbound exit only|
|82.31||132.47||82C||Austin Avenue||Eastbound exit only|
|82.79||133.24||83A||Foster Road||No eastbound exit|
|83.01||133.59||83B||Central Avenue||Westbound exit and eastbound entrance only|
|—||I-94 west (Edens Expressway) – Milwaukee||West end of I-94 overlap; westbound exit and eastbound entrance only; west end of express lanes|
|84.77||136.42||43C||Montrose Avenue||Westbound exit and eastbound entrance only|
|85.03||136.84||43D||Kostner Avenue||Westbound exit only|
|44A||IL 19 (Irving Park Road) / Keeler Avenue||No westbound exit|
|44B||IL 19 (Irving Park Road) / Pulaski Road||Westbound exit and eastbound entrance only|
|87.08||140.14||45C||Belmont Avenue||Westbound exit and eastbound entrance only|
|87.64||141.04||—||Sacramento Avenue||Eastbound entrance only|
|87.79||141.28||46A||California Avenue||Westbound entrance and eastbound exit only|
|87.96||141.56||46B||Diversey Avenue||Westbound exit and eastbound entrance only|
|47A||Western Avenue, Fullerton Avenue||Westbound exit and eastbound entrance only from Western Avenue|
|89.08||143.36||47B||Damen Avenue||Westbound exit and eastbound entrance only|
|90.10||145.00||48B||IL 64 (North Avenue)|
|90.91||146.31||49B||Augusta Boulevard, Milwaukee Avenue||Westbound exit and eastbound entrance only|
|91.40||147.09||50A||Ogden Avenue||Westbound entrance and eastbound exit only|
|91.62||147.45||50B||Ohio Street||East end of express lanes|
|92.19||148.37||51A||Lake Street||Westbound exit and eastbound entrance only|
|92.27||148.49||51B||Randolph Street west|
|92.34||148.61||51C||Washington Boulevard east||Exits only; no entrances|
|92.53||148.91||51E||Monroe Street||Eastbound exit only|
|92.62||149.06||51F||Adams Street west||Westbound entrance and eastbound exit only|
|92.71||149.20||51G||Jackson Boulevard east||Westbound entrance and eastbound exit only|
| I-290 / IL 110 west (Eisenhower Expressway) – West Suburbs
Congress Parkway – Chicago Loop
|Circle Interchange; signed as exits 51H (west) and 51I (east); Kennedy Expressway ends, Dan Ryan Expressway begins|
|93.42||150.34||52A||Taylor Street, Roosevelt Road||Westbound entrance and eastbound exit only|
|93.57||150.59||52B||Roosevelt Road, Taylor Street||Westbound exit and eastbound entrance only|
|94.22||151.63||52C||18th Street||Westbound entrance and eastbound exit only|
| I-55 south (Stevenson Expressway) – St. Louis
I-55 north (Stevenson Expressway) / Lake Shore Drive, Cermak Road – Chinatown
|Signed as exits 53B (south) and 53C (north) westbound; Cermak Road access from westbound only; west end of express lanes|
|94.48||152.05||53A||Canalport Avenue, Cermak Road||Westbound exit and eastbound entrance only|
|96.45||155.22||55A||35th Street||U.S. Cellular Field, Illinois Institute of Technology|
|99.50||160.13||58A||59th Street||Westbound exit and eastbound entrance only|
|100.00||160.93||58B||63rd Street||Westbound entrance and eastbound exit only|
|—||I-94 east (Dan Ryan Expressway) – Indiana||East end of I-94 overlap; east end of express lanes; Chicago Skyway begins|
|100.33||161.47||State Street||Westbound exit and eastbound entrance|
|101.42||163.22||St. Lawrence Avenue||Westbound exit and eastbound entrance|
|101.78||163.80||73rd Street||Westbound exit and eastbound entrance|
|Stony Island Avenue to Lake Shore Drive||Westbound exit and eastbound entrance|
|103.93||167.26||Jeffery Boulevard, 84th Street||Eastbound entrance|
|104.28||167.82||87th Street||Westbound exit|
|104.67||168.45||Chicago Skyway toll plaza|
|105.26||169.40||Anthony Avenue, 92nd Street||Eastbound exit and westbound entrance|
|Chicago Skyway Toll Bridge|
|107.82||173.52||US 12 / US 20 / US 41 (Indianapolis Boulevard)||Eastbound exit and westbound entrance|
|I-90 east / Ind. Toll Rd. east to I-80 / I-65 – Toledo, Ohio||Continuation into Indiana; Chicago Skyway ends|
Related routes 
- I-190 - a spur in to O'Hare International Airport in Chicago.
- I-290 - a southwest dogleg left route accessing the west suburbs and heading east into downtown Chicago. Also known as the Eisenhower Expressway.
- "Illinois Technology Transfer Center" (ESRI shapefile). Illinois Department of Transportation. 2011. Retrieved February 18, 2013.
- Samuel, Peter (June 29, 2005). "Skyway is Interstate-90 unless state withdraws reports - Feds". TOLLROADSnews. Retrieved January 3, 2010.
- Mayer, Harold M.; Wade, Richard C. (1969). Chicago: Growth of a Metropolis. Chicago: University of Chicago Press. p. 442. ISBN 0-226-51274-6.
- "Cherry Valley Interchange Press Release". Nov 12, 2009. Retrieved November 13, 2009.
- Staff. "Chicago Skyway - Tolls". Skyway Concession Company. Retrieved January 10, 2013.
- "N. W. Tollway Opens Aug. 20 at Ceremony". Chicago Daily Tribune. June 30, 1958. Retrieved April 18, 2010.
- "First tollway vehicle to be covered wagon". The Milwaukee Journal. August 11, 1958. Retrieved April 18, 2010.
- Ryan, Joseph (2007-09-07). "Northwest Tollway renamed for reformer Addams". Retrieved 2007-09-08.
- Illinois General Assembly (2007-05-22). "Full text of HJR0019". Retrieved 2007-09-08.
- Foust, Hal (April 17, 1958). "A Great Day For Chicago! Skyway Open". Chicago Tribune. Retrieved June 21, 2010.(subscription required)
- Staff. "System Facilities". Chicago Area Transportation Study. Retrieved July 7, 2007.
- McClendon, Dennis (2005). "Skyway". Encyclopedia of Chicago. Retrieved July 7, 2007.
- Staff (2005). "Getting Around Illinois". Illinois Department of Transportation. Retrieved July 7, 2007.
- Staff. "Chicago Skyway Rehab: Hydraulics Boost Productivity". Enerpac Company. Retrieved July 7, 2007.
- "Chicago privatizes Skyway toll road in $1.8 billion deal". Southern Illinoisian (Carbondale, IL). Associated Press. October 17, 2004. Retrieved March 4, 2008.
See also 
- Media related to Interstate 90 in Illinois at Wikimedia Commons
- Media related to Chicago Skyway at Wikimedia Commons
- Illinois Tollway official site
- Official website of the Chicago Skyway
- Chicago Department of Transportation
- Description and history from Richard Carlson's Illinois Highways
- Historic, Current & Average Travel Times For The Jane Addams Tollway
- Best of Transportation Page
- Historic American Engineering Record (Library of Congress)
- Steve Anderson's ChicagoRoads.com: Chicago Skyway (I-90)
- Chicago Skyway High Bridge at Structurae. Retrieved on 2011-12-05.