The South Side Elevated Railroad (originally Chicago and South Side Rapid Transit Railroad) was the first elevated rapid transit line in Chicago, Illinois. The line ran from downtown Chicago to Jackson Park, with branches to Englewood, Normal Park, Kenwood, and the Union Stock Yards. The first 3.6 miles (5.8 km) of the line opened on June 6, 1892, and much of its route is still used today as part of the Green Line of the Chicago "L" system.