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This website contains updated information only for those corridors actively in construction, the Southeast Rail Extension and North Metro Rail. All other content on this website is meant for historical purposes only and may not be up-to-date. Please visit RTD-Denver.com for the latest information about RTD.

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Northwest Rail - B Line

Northwest Rail Line is a 41-mile high-capacity, fixed-guideway transit project from Denver Union Station to Longmont, passing through North Denver, Adams County, Westminster, Broomfield, Louisville and Boulder.

B Line logo

The first 6.2-mile segment of the Northwest Rail Line from Denver Union Station to south Westminster (71st Ave. and Lowell Blvd.) is funded as part of the Eagle P3 project. This commuter rail project opened July 25, 2016.

Northwest Rail Line map

RTD's new B Line trains will operate on the Northwest Rail Line.

Northwest Rail <br />Line map June 2015
Click here for a larger version

Northwest Rail Line fact sheet

See the facts, figures and highlights for the Northwest Rail Line.

Northwest Area Mobility Study

The Northwest Area Mobility Study started in May 2013 and lasted for about 13 months. It developed a prioritized list of mobility improvements for the Northwest area of the Regional Transportation District's (RTD) service area. Follow this link to learn more about the study.

If you would like to comment about the Northwest Rail project click here.

For additional resources and videos click here.

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