The Dan Ryan Expressway is a major highway in Chicago, Illinois, officially designated as Interstate 90/94. It runs approximately 15 miles from the south side of the city to the downtown area, providing a vital route for commuters and travelers. The expressway is named after Dan Ryan, a former Cook County Board president who played a significant role in its construction. Opened in 1962, the Dan Ryan Expressway is known for its heavy traffic, especially during rush hours. It connects several neighborhoods and key locations, including the Chicago Loop and Midway International Airport. The expressway is an essential part of the city's transportation infrastructure, facilitating the movement of goods and people.