The Long Beach loop at the end of the Blue Line has been shut down for 2 weeks now. Maintenance to the 4 stations include new paint, tile, lighting, and canopies. MTA is also replacing tracks where needed and preforming rail inspections. The loop is still on schedule to re-open on October 19. Until then there are shuttle buses that will take you from the Anaheim station to any of the 4 closed stations (DTLB, 5th, 1st, and Pacific).
Source: The Source Metro