Seems that the Metro Orange Line is doing some streetwork, for the betterment of operation and transit efficiency:
"The Los Angeles County Metropolitan Transportation Authority’s (Metro) contractors will be re-paving a portion of Metro Orange Line transitway between the intersections of Topham Street/Victory Boulevard and Balboa/Victory Boulevard beginning Wednesday, Dec. 3, for approximately two weeks barring any weather-related delays. Metro Orange Line buses will be detoured off the transitway and stops may be temporarily re-located during this time. [...] Metro intends to successfully meet its 10-week estimate for completion of all work. [...]
"Metro Orange Line buses will travel eastbound and westbound through Oxnard Street/Topham Street and Victory Boulevard with temporary bus stops at Topham Street and Tampa Avenue and Oxnard Street and Reseda Boulevard."
For more info, please click here.