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|direction_b=North |terminus_b= in Zion }} The Tri-State Tollway is a U.S. toll road maintained by the Illinois State Toll Highway Authority (ISTHA) in northeastern Illinois which is considered one of the most heavily traveled highways in the country (according to the IBTTA, the tollway is the nation's 4th busiest toll road). It is actually a combination of three different Interstates: * Interstate 80 (I-80) between I-94 at Thornton and I-294 near Hazel Crest * I-294, which is routed concurrently with I-80 to Hazel Crest, and then turns north to Deerfield * I-94 north from Deerfield to U.S. Route 41 (US 41). The segment containing I-294 is long; in total, the Tri-State Tollway is actually about long. Only the Ronald Reagan Memorial Tollway is longer. Despite its name, the Tri-State Tollway does not enter either Indiana or Wisconsin. On the Indiana side, the Tri-State Tollway ends away from the Indiana border and continues as the Kingery Expressway; however both the Kingery and the Indiana portion, which was later named the Borman Expressway, were known as the Tri-State Highway before the tollway was completed. On the Wisconsin side, the toll road ends just before the border at US 41 and Russell Road, although ISTHA maintenance continues to the state line. ==Features== * Oases—rest area terminology for the ISTHA toll roads which contain commercial restaurants, tourist information and service stations. Most within the Chicago area are built over the road, with others in two separate units along each side of the highway. * Pay-as-you-go tolling—the Tri-State has a barrier toll system where tolls are collected at different intervals along the road rather than at most entrances and exit ramps, though some of the more popular exits and entrances have toll barriers. * Open road tolling—all sections of the road outside of exit and entrance ramps allow automatic collection of tolls via I-Pass (compatible with E-ZPass) via ORT gantires at highway speeds. * Thornton Quarry—about of the highway crosses a quarry being converted into a large lake for overflow storm water. Currently, the road's elevation over the floor of the quarry is up to deep on both sides of the highway. 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「Tri-State Tollway」の詳細全文を読む スポンサード リンク
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