Stories from the set

The studio refused to pay Sienna Miller the sum she requested for her participation in the project, and Chadwick Boseman gave her his own fee.

At the 44th minute, an incoming call comes from the number 212 187-1013. 212 is the New York area code, 187 is a police code meaning "murder", and 10-13 is a code meaning that "a police officer requires assistance".

The title "21 Bridges" refers to the number of entrances to and exits from the territory of Manhattan. In reality, however, there are only 17 bridges there, and the other 4 are tunnels. Initially, the project was given the title "17 Bridges".