10:51 A.M. Update:
All Metrorail delays have been cleared.
10:22 A.M. Update:
The earlier track problem tying up the Blue and Yellow lines this morning has been fixed, Metro reports, but residual delays are expected to continue on both lines in both directions.
9:49 A.M. Update:
Metro reports that this morning’s Red Line delays have been cleared, leaving delays only on the Blue and Yellow lines.
9:27 A.M. Update:
Green Line delays have been cleared, Metro reports, but delays on the Blue, Red and Yellow lines are ongoing.
8:56 A.M. Update:
Four Metro lines — Red, Yellow, Blue and Green — are now experiencing delays.
The Green Line is the latest to report delays in both directions due to trains single-tracking between West Hyattsville and College Park due to a disabled train at Prince George’s Plaza.
Yellow Line trains are continuing to single-track between Pentagon City and L’Enfant Plaza due to a track problem near Pentagon, creating 20- to 30-minute delays.
Blue Line trains are delayed as they get caught up in congestion caused by the single-tracking Yellow Line trains.
The Red Line is still experiencing residual delays in both directions due to an earlier track problem at Takoma.
8:25 A.M. Update:
Metro now reports delays on the Blue Line. If you’re keeping score, that means the Red, Yellow and Blue lines are all experiencing delays this morning.
Blue Line trains are getting caught up in congestion behind single-tracking Yellow Line trains, according to Metro spokesman Dan Stessel.
8 A.M. Update:
While the cracked rail on the Yellow Line is causing single-tracking that will last through the morning commute, Metro doesn’t know yet if the cracked rail near Takoma will cause similar delays on the Red Line, said Metro spokesman Dan Stessel.
Until we know for sure, you should anticipate delays in both directions on the Yellow or Red Lines this morning.
7:45 A.M. Update:
Red Line trains are also single-tracking this morning due to a cracked rail near Takoma. Trains are single-tracking between Fort Totten and Takoma, and Red Line riders should expect delays of at least 20 to 30 minutes during the morning rush.
The cracked rails near the Pentagon and Takoma all appear to stem from the extreme drop in temperatures, said Metro spokesman Dan Stessel.
Metro no longer reports any delays on the Blue Line. Commuters, if you’re seeing anything else out there, let us know in the comments or by tweeting @drgridlock.
7:25 A.M. Update:
Only the Yellow Line is single-tracking due to the cracked rail near the Pentagon. The cracked rail is actually on the bridge between Virginia and Washington, so the Yellow Line will share one track between Pentagon City and L’Enfant Plaza.
The Blue Line won’t be single-tracking as Metro initially reported, but there will still be delays on that line. The delays aren’t expected to be as severe as those faced by Yellow Line riders, according to Metro spokesman Dan Stessel.
Watch out for delays on the Blue and Yellow lines this morning. A cracked rail near the Pentagon is causing single-tracking on the Yellow Line (between Pentagon City and L’Enfant Plaza) and the Blue Line (between Pentagon City and Arlington Cemetery).
Expect delays of at least 20 to 30 minutes to remain until after the morning rush hour. Trains aren’t able to run over the cracked rail until it’s fixed, and crews can’t fix it until after the morning commute, according to Metro spokesman Dan Stessel.