North refers to trains to 9^th Avenue and south refers to trains to Ditmas

For photos see www.nycsubway.org

This line was a surviving portion of the BMT Culver line. The IND was extended from Church Avenue via ramp to meet the BMT line at Ditmas Avenue. The Line south of Ditmas became IND and the Culver ended at Ditmas on the South and Lower 9^th Avenue on the North. Originally the BMT ran from 9^th Avenue on the D train and then via this line to Ditmas avenue where it then ran via today’s F train. Immediately after closing, free transfers to the B35 bus were issued at both ends and were discontinued with the advent of MetroCard.. This free bus transfer was one of three free bus transfers which are now history: Myrtle Broadway to bus replacing the Old M, the BX55 bus at 149^th Street/3^rd Avenue replacing the 8 train and this transfer. Today, only the L train has a free train to bus and bus to train transfer and that is due to the bus boarding within the paid area or else that too would history.

There are two track maps. One by Michael Calcagno as done for www.nycsubway.org  shows the North and center track as being abandoned and the other by Peter Dougherty in www.nyctrackbook.com which shows the three tracks. The answer is simple: the line’s last days were run with only the southernmost track in service, possibly due to track problems with the northern two tracks and/or North platform. Both show two tracks leaving Lower 9^th Avenue with the Northern track dividing into a new northern track and a center track which ended past the 13^th avenue Station and then only the southern track entering Ditmas Avenue While we have no hard evidence, the center track was probably used for storage for disabled trains. 

9^th Avenue has two levels. The upper level has three tracks and two island platforms. The lower level has three tracks and two island platforms. The North track did not connect to this line, but rather the South Brooklyn Railway which handles freight service for NYCT. Michael’s track map shows that in the last days, the center track was the only track used by this line which became the southern track.

 Ditmas Avenue at the time this line ran, had one wall platform serving northbound trains on the IND line to Church Avenue, a center bypass track and an island platform with the IND on the east track and the Culver shuttle on the west track with merged with the east track of this island platform leaving three tracks heading south. When the shuttle was abandoned and finally torn down, a windscreen was placed on the southbound island platform converting it into a "wall platform" which today still show the orange edge of platform line below the windscreen. The station now has concrete platforms and a crossunder. All that remains of this line is a trackway coming from the Northwest merging with the Coney Island Bound F track.