Passers-by spotted a man parking his motorcycle in the middle of the bridge before he climbed over the bridge rail so they called an emergency centre that in turn alerted Pak Kret Police Station.
Police from the station arrived at the scene and spent more than an hour convincing the man to climb back onto the bridge’s walkway.
The man, 22, whose name was withheld, told police that he did not have a reason to live after his girlfriend left him several years ago.
Police contacted his relatives to pick him up.