N Line to ThorntonComing soon

More commuter rail comes to the Denver metro area with the N Line (referred to as the North Metro rail line during construction). The first 13 miles of the proposed 18.5 mile commuter rail line will provide service from Union Station through Denver, Commerce City, Thornton, Northglenn, and eventually to north Adams County.


New Rail in New Neighborhoods

The N Line brings RTD train service through Denver, Commerce City, Northglenn, Thornton and north Adams County. The N Line will connect at Union Station where riders have the option to transfer to the University of Colorado A Line to the airport and other rail lines that depart from Union Station and downtown.


The N Line will offer convenient train service to connect the northern metro area to the rest of the greater Denver region.

At the Union Station light rail platform

At the Union Station commuter rail platforms

Construction Updates

updated as of 08/01/2019

  • Punch list items - Stock Show Station utility work, electrical, grading.
  • Punch list items
  • Seeding
  • 72nd Station finish work and communications
  • Seeding
  • Punch list items
  • 88th Station finish work and communications
  • Punch list
  • Seeding
  • Top lift asphalt paving at 88th Station
  • 104th Station parking garage elevators, electrical, communications, and finish work.
  • 104th Station grading and electrical, station communications, punch list items.
  • 112th Station finish work, 124th finish work, station communications, punch list items, top lift asphalt at 112th Station, 112th York Street paving at the station.
  • Future construction will continue when funding is available.
  • Completion of pedestrian channelization barriers, fencing and signage installation.


The N Line is proposed to have nine stations total, including Union Station, when the entire line is complete. The first phase of 13 miles will have six stations, with six Park-n-Rides that will add a total of 2,593 parking spots.

  • Union Station

    Union Station

  • 48th & Brighton and National Western Center Station Rendering

    48th & Brighton at National Western Center

  • Commerce City and 72nd Station Rendering

    Commerce City & 72nd

    • Parking:359 total
  • Original Thornton and 88th Station Rendering

    Original Thornton & 88th

    • Parking:561 total
  • Thornton Crossroads and 104th Station Rendering

    Thornton Crossroads & 104th

    • Parking:907 total
  • Northglenn and 112th Station Rendering

    Northglenn & 112th

    • Parking:316 total
  • Eastlake and 124th Station Rendering

    Eastlake & 124th

    • Parking:410 spots *Under consideration
  • Proposed future York and 144th Station location

    York & 144th

    • (future construction)
  • Proposed future North Thornton and Hwy 7 Station location

    North Thornton & Hwy 7

    • (future construction)


RTD acquired most of the North Metro Rail right-of-way from Union Pacific Railroad. In 2009 RTD purchased the railroad right-of-way from 70th Avenue to the north end of the corridor and beyond, putting in place an essential element of the project.


RTD completed an investment study to evaluate North I-25 transit from Denver to Brighton
The FasTracks vote passed.
RTD conducted a scoping study to build on previous analyses of the corridor.
RTD began an Environmental Impact Statement (EIS) process to analyze transit options for the corridor. The EIS built on previous transit alternative studies, possible adverse implementation impacts and subsequent mitigation.
RTD purchased most of the North Metro Rail right-of-way from Union Pacific Railroad for $119 million
RTD issued a final EIS, identifying community benefits and possible impacts of a new transit service in the area; the project received a Federal Transit Administration Record of Decision.
RTD committed funding to build the project’s first phase from Union Station to the National Western Center.
RRTD received an unsolicited proposal to build the line, opened a competitive bidding process, and later awarded a design-build contract to Regional Rail Partners (RRP) to complete the line to Eastlake•124th, with options to extend the line as funds become available.
North Metro Rail Line broke ground in March; design of the project reached 56 percent completion in September.
Utility relocation and Right of Way acquisition underway; design 90 percent complete; construction began in summer 2015. Removal of old track began and construction began on the North Metro Skyway Bridge.
Construction underway on the North Metro Line.
Construction began on the 104th Crossroads Station parking garage.
Wires on the North Metro Line went live in March and trains began testing on the corridor in April. Safety outreach to the schools and communities is ongoing.