B Line (RTD)

B Line
Bridge carrying B and G lines over freight lines and South Platte River
Overview
Type	Commuter Rail
System	Regional Transportation District
Status	Operating in truncated segment
Locale	Denver Metropolitan Area
Termini	Union Station Westminster (initial) Downtown Longmont (proposed)
Stations	2 (initial segment) 2 (under construction) 8 (proposed)
Website	Official website
Operation
Opened	July 25, 2016 (2016-07-25)
Owner	Regional Transportation District
Operator(s)	Denver Transit Partners
Rolling stock	Hyundai Rotem Silverliner V
Technical
Line length	6.2 miles (10 km) (initial segment) 41 miles (66 km) (proposed)
Track gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Electrification	Overhead lines, 25k V AC 60 Hz
Route diagram Downtown Longmont (TBD) Gunbarrel (TBD) Boulder Junction (TBD) Louisville (TBD) Flatiron (TBD) Church Ranch (TBD) Westminster US 287 (Federal Boulevard) I-76  G  Line (TBD) Pecos Junction CRMF I-70 41st & Fox I-25 South Platte River  N  Line (2018)  A  Line Amtrak California Zephyr Union Station  A  ( G  TBD), ( N  2018) ▼  C ,  E , &  W  Lines This diagram:

The B Line, also known as the Northwest Rail Line during construction, is a commuter rail line which is part of the commuter and light rail system operated by the Regional Transportation District in the Denver Metropolitan Area in Colorado. Part of the FasTracks project, the first 6.2-mile (10 km) section from downtown Denver to south Westminster opened on July 25, 2016. When fully built out the B Line will be a 41-mile (66 km) high-capacity route from Denver Union Station to Longmont, passing through North Denver, Adams County, Westminster, Broomfield, Louisville and Boulder.

The B Line's southern terminus is at Union Station in Denver. It runs on a railroad right-of-way north sharing track with the G Line until the Pecos Station after which the two routes diverge. Initially, the B Line continues north to its terminus at Westminster Station; this shuttle route is completed in approximately 11 minutes. It will start stopping at 41st & Fox station and Pecos Junction Station, which will both be served by the G Line, on May 21, 2017.

In 2004, Colorado voters approved FasTracks, a multibillion-dollar public transportation expansion plan. As part of the Eagle P3 project, the first segment of the B Line opened on July 25, 2016. The remaining segment, extending to downtown Longmont, will require additional funding in order to be completed prior to 2044. The announcement angered many voters in the cities and suburbs north of Denver, who had approved a sales tax increase in 2004 to fund the FasTracks project.