IND Sixth Avenue Line is a major trunk of the New York City Subway that runs beneath Sixth Avenue in Manhattan. Built by the Independent Subway System (IND), the line opened in 1940 and forms a principal north–south corridor for several subway services through Manhattan.
Services and identification
Multiple routes use the Sixth Avenue trunk; their service symbols (route "bullets") are displayed in bright orange on official maps and schedules to indicate the Sixth Avenue routing. Service patterns have changed over time as connections and operational needs evolved.
History and significance
- The line was constructed by the IND and inaugurated in 1940 as part of a broader effort to expand rapid transit in Manhattan.
- Later infrastructure projects and connections — for example, the mid-20th-century reconfigurations that followed new junctions and linkages — altered which trains used the trunk and improved network connectivity.
- The Sixth Avenue corridor replaced and supplemented earlier elevated and surface transit options along the avenue, becoming a key transit artery for Midtown and Lower Manhattan.
Ridership
Ridership on the Sixth Avenue Line is substantial. Estimates vary by year and method of measurement; one commonly cited figure places average weekday usage at roughly 669,000 passengers. Actual counts change with service patterns, population shifts, and broader transit trends.