Interestingly , that report also concluded that four of the five dirtiest stations were in the Bronx , but it identified four entirely different stations : Mosholu Parkway on the No . 4 , 174th-175th Streets and Kingsbridge Road on the B and D lines and 205th Street on the D. Both reports cited one Brooklyn station , Atlantic Avenue on the L line in East New York , as one of the five dirtiest . ''