(Portland, OR) -- A man suffering a mental health crisis closed I-5 northbound in Portland for 10 hours Saturday afternoon. The man walked onto the bridge ramp and climbed over a chain link fence. The freeway was closed, so negotiators could talk with the man. They spent several hours trying to get him to climb back over the fence and get help. Police eventually backed off, but kept the freeway closed. After two hours the man climbed off the bridge on his own. The freeway reopened early Sunday morning.