to Chicago's streets. While Madison Street in Chicago acts as the reference point for north–south street numbering the first "1" is removed; this makes what would be a five digit address number in Illinois into a four digit address number in Hammond. The state line is used as the reference point for east–west street numbering. Other cities and towns in Northwest Indiana that use the Hammond numbering system are Whiting, Munster and Highland. Dyer also uses the Hammond numbering system but the first number removed from the north–south streets is a "2," as by that point the Illinois numbers across the state line start with the number 2 (Munster's street numbers start with a "1" north of the Dyer line, making them 5 digits); and East Chicago uses the canal located in the middle of the city as the east–west reference point, while embodying Hammond's numbering system for the north–south streets. I-90 – Indiana Toll Road, exits (listed northwest to southeast): Indianapolis Boulevard – U.S. 12/20/41 Calumet Avenue – U.S. 41 Cline Avenue – State Road 912 I-80/94 – Borman Expressway, exits (listed west to east): Calumet Avenue – U.S. 41 North Indianapolis Boulevard – U.S. 41 South/State Road 152 Kennedy Avenue Cline Avenue – State Road 912 Public transportation The South Shore Line, a Chicago to South Bend, Indiana commuter rail line, has a station on Hohman Avenue. It is operated by the Northern Indiana Commuter Transportation District. Amtrak, the national passenger rail system, provides twice-daily service in both directions, operating its Wolverine through the Hammond–Whiting station between Chicago and Pontiac, Michigan, just north of Detroit. The nearest commercial airport is Chicago Midway International Airport about 25 miles away in Chicago. Bus transit was provided by the Northwest Indiana Regional Bus Authority, which assumed responsibility from the city's Hammond Transit System in 2010, establishing EasyGo Lake Transit system in its place. All EasyGo buses were discontinued on June 30, 2012 due to a lack of funding. In addition, Pace routes 350 and 364 and GPTC Tri-City Connection Route 12 from Gary, Indiana stop at Hammond's Dan Rabin Transit Plaza. Medical centers and hospitals The only hospital in Hammond is Franciscan St. Margaret Health on Stateline Road, across the street from Calumet City, Illinois. It is an accredited chest pain center serving Northwest Indiana and the south suburbs of Chicago. The hospital was founded in late 1898 and was originally