Cermak Road, also known as "Twenty-Second Street", is a 19-mile-long, major east-west artery on Chicago's near south and west sides and the city's western suburbs. In Chicago's street numbering system, Cermak is 2200 south, or twenty-two blocks south of the baseline, Madison Street (Chicago). Normally, one mile comprises eight Chicago blocks, but the arterial streets Roosevelt Road, formerly named Twelfth Street and at 1200 South, and Cermak Road (Twenty-Second Street) were platted before the eight-blocks-per-mile plan was implemented. Roosevelt Road is one mile south of Madison Avenue and there are twelve blocks within that mile. Cermak Road is two miles south of Madison Avenue and there are ten blocks within the mile between Roosevelt and Cermak Roads.