The Maryland Transit Administration will seek approval next month for as much as $425 million in “relief payments” related to delays in the Purple Line light rail project. Officials announced the extra payments along with a roughly 234-day delay that will push the line’s completion back from spring of 2027 to December of that year. “The MTA team has been working incredibly hard and over the past year,” Holly Arnold, administrator of the Maryland Transit Administration, said in an interview Friday.