Getting around the city, and especially downtown Manhattan, could be difficult this weekend because of the anniversary of 9/11 and the security surrounding the ceremony.
Here's what you need to know:
Beginning Saturday at midnight, northbound West Street between Battery Place and Murray Street will be closed.
On Sunday starting at 8 a.m., West Street going south between Murray Street and Battery Place will be shut down.
On Sunday, from early in the morning until 6 p.m., all streets from Battery Place to Vesey Street will be closed. There will be bus detours on the M-5, M-20, M-22, X-1 and X-10.
The MTA will close the subway staircases on Church Street, Park Place and Barclay and Vesey streets.
Subway trains will bypass the Cortlandt Street station on the R line for four hours Sunday morning, between 7 a.m. and 11 a.m.
Subway entrances on Church Street at Chambers, Warren and Murray streets will remain open. The subway station at Park Place and Broadway, near City Hall, will also be open.
PATH service will be suspended between EXPL and WTC from 7 a.m. and 11 a.m.