UPDATE, 8 p.m.: trains have resumed normal operations but there will be residual delays through 8:25 or so.
UPDATE at 6:15 p.m.: Major delays of up to 45 minutes continue on Red/Purple Line subway as maintenance crews work to isolate problem with switch in west crossover at Union Station. Single tracking continues from Westlake Station to Union station. A bus bridge remains in operation to shuttle passengers between Pershing and Union Station. Updates to follow.
Rush-hour passengers are facing MAJOR 30-40 minute delays boarding subway trains at Union Station. This is due to equipment issues on the track between Civic Station and Union Station that serve the Metro Red Line to North Hollywood and the Metro Purple Line to Wilshire/Western. Trains are sharing single track between Union Station and Westlake/MacArthur Park Station, with two trains eastbound and two trains westbound. A bus bridge is established to shuttle passengers between Pershing Square Station to Union Station. Subway passengers connecting to Metrolink trains should allow extra time or use Metro buses or LADOT Transit DASH B, D or Bunker Hill Shuttle.