Between 11:30 pm and 4:15 am, passengers should expect minor delays and allow extra travel time to arrive at their destinations. Passengers might also be asked to board a bus shuttle in some instances.

Between the University of Colorado A Line and the B line, there are more than 50 miles of track. Crews are performing long-term preventive maintenance and adjustments on the overheard catenary system (OCS) wires. Adjustments have been completed on approximately 70 percent of the track. This has dramatically reduced the likelihood of power related service delays.

These nightly work windows are also being used to perform software upgrades and to make improvements to the tracks themselves.

For more information or to sign up to receive email notifications for a specific route or rail line, please visit the Rider Alert page at RTD-Denver.com.

Information provided by the Rapid Transit District (RTD).