Usually Notre Dame Bridge / Bridge St
Manchester police usually announce dates of their checkpoints in advance. They are usually set up on the Notre Dame Bridge on Bridge St going Westbound, but not always.
These checkpoints are always protested by activists holding signs warning of the checkpoint. So you can usually avoid them in Manchester.
The next checkpoint in Manchester is scheduled Thursday night July 20th, 2017.
When we find out about checkpoints we post them on a facebook page. “Checkpoint-Free New Hampshire”
https://www.facebook.com/NoCheckpointsNH