The Central Subway plan got a boost yesterday care of a $9.9 grant via an unknown donor. (Though, according to Curbed, the Federal Transit Administration might be the culprit.) MTA spokesperson Judson True tells Streetsblog that "the funds would mostly go towards preliminary design work, since preliminary engineering on the project is essentially complete." The total cost for the SOMA-to-Chinatown underground fun will cost a total of $1.57 billion.