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|direction_a=West |terminus_a= in Chicago |junction= in Chicago in Chicago in Chicago |direction_b=East |terminus_b= in Chicago }} The Dan Ryan Expressway is a freeway in the city of Chicago that runs from the Circle Interchange with I-290 near downtown Chicago through the South Side of the city. It is designated as both Interstate 94 and Interstate 90 south to 66th Street, a distance of . It then becomes just Interstate 94 at the split with the Chicago Skyway (which leads to Interstate 90), with a remaining distance of . This is a total distance of .〔 The freeway was named for Dan Ryan, Jr., a former president of the Cook County Board of Commissioners. == Route description == On an average day, up to 307,100 vehicles use a portion of the Dan Ryan (2005 data). The Dan Ryan, and its North Side counterpart the Kennedy Expressway, are the busiest roads in the entire state of Illinois. Utilizing an express-local system, the Dan Ryan has fourteen lanes of traffic; seven in each direction, with four of those as express lanes and the other three providing access for exit and on-ramps. Despite its width, the Dan Ryan is prone to traffic jams. The posted directions on the Dan Ryan are different from the actual compass direction of the expressway, which may cause confusion to many travelers. The Dan Ryan for its entire length runs north–south. However, the Dan Ryan is a part of the larger Interstates 90 and 94, which both run east–west through the United States. Therefore, one who is traveling "west" on I-90/94 is actually driving north on the Dan Ryan as it passes through Chicago; the interstates continue on a westerly path outside of the city. Similarly, "east" on 90 and 94 on the entire system is really south through Chicago; the interstates will continue on an easterly path outside of the city. Chicagoans also typically refer to the direction of travel as either "inbound" or "outbound" from the downtown area. Four miles of continuous high-rise housing projects (Stateway Gardens and the Robert Taylor Homes) formerly ran parallel to the expressway on its eastern side from Cermak Road south to Garfield Boulevard. However, nearly all of these buildings have been demolished as part of the CHA's transformation plan. The Red Line of the Chicago Transit Authority's 'L' runs in the median of the Dan Ryan. That section opened on September 28, 1969. Chicago pioneered the location of rapid transit line in expressway medians, a practice that has since been followed in several other cities, such as Toronto, Pasadena, CA and Charlotte. The control cities for the Dan Ryan Expressway are Indiana and Chicago Loop. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dan Ryan Expressway」の詳細全文を読む スポンサード リンク
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