L Line

Central Rail Line and Central Rail Line Extension is the L Line

The 5.3-mile L Line opened in 1994 and is Denver's first rail line between I-25 & Broadway Station and the 30th & Downing Station. L Line trains loop into the downtown area every 15 to 30 minutes.

Additionally, the future L Line Extension would connect the existing downtown rail service to the A Line from the 30th & Downing Station to the 38th & Blake Station.

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RTD Board of Directors adopted the EE for the Central Rail Extension


The Central Rail Extension underwent further analysis, including a study to identify the most feasible transit route and operating plan to provide a direct connection between 38th & Blake and downtown Denver.


The Central Rail Extension Mobility Study is complete and provided several options for considerations. Once final funding is identified, final design and construction will begin. In the meantime, basic engineering design started is expected to be 30% complete in 2015.


Basic engineering was completed. Once final funding is identified, final design and construction on the L Line extension will begin.


The L Line Downtown Loop opened January 14, 2018. The Welton Street segment will operate as the L Line as proposed in the Central Rail Extension Mobility Study.