The next segment of commuter rail in RTD’s network — the 13-mile N-Line from Denver to Thornton — will go live Sept. 21, the transit agency announced this week.

The long-stalled line, which was supposed to open for passengers two years ago but ran into delays that nearly resulted in litigation, will run from Union Station in Denver, connecting to Commerce City, Northglenn and Thornton, including a stop at the National Western Complex. Construction began on the corridor in 2014.

“Our efforts to open this line have continued even during the pandemic,” Regional Transportation District General Manager Paul Ballard said this week. “I am confident opening the new line will play a key role in encouraging local recovery and continued growth in the north metro suburbs.”

The N-Line will feature six stations, with a total of 2,480 parking spaces. A trip between Union Station and Eastlake-124th Station, the end-of-line stop, will take about 29 minutes. As part of a promotional pilot program, RTD will offer a local fare for travel on the entirety of the line during its first six months of operation.