Atlantic Avenue–Barclays Center (originally Atlantic Avenue) is an express station on the IRT Eastern Parkway Line which has four tracks, one island platform, and two side platforms. On the center platform, there are two old indicator signs which mark the next train, formerly used for non-rush hour short turn trains. An old style sign to the Brooklyn Academy of Music also exists. The trackway to the Long Island Rail Road Atlantic Branch is still visible at the north end of the northbound local track, although much of it is behind corrugated wall; more information about this and other unused trackways is at Bergen Street. The LIRR Atlantic Terminal platforms, slightly lower, are clearly visible through floor-to-ceiling railings.