The Centre Street Loop got its start in 1908 with the Brooklyn Rapid Transit Company's first Manhattan subway track: the terminal at the foot of the Williamsburg Bridge. The Loop was the first of two BMT Brooklyn Loops designed to connect various Brooklyn Subway lines without requiring new and inefficient terminals in lower Manhattan. Under its original design, the Loop would connect the tracks of Broadway Elevated coming over the Williamsburg (now the BMT Jamaica Line) with Brooklyn Bridge trains originating in Brooklyn. The loop was never completed as planned and was instead incorporated into the BMT Nassau Street Line. These photos document the construction of the tracks that today carry the J and Z trains, and capture glimpses of Manhattan's Civic Center before the completion of the Municipal Building and other prominent structures around Foley Square and City Hall Park.

Workers install bracing ahead of excavation for the construction of the BRT Centre Street Loop, October 8, 1909. This building, No. 112 Centre Street, stood at the northeast corner of Centre and Franklin Streets. All the buildings on this block were razed in the 1930s in preparation for the construction of the Manhattan Criminal Court building at 100 Centre Street.