Police say the man started climbing the south-side Manhattan tower of the bridge just before noon on Saturday. Police vehicle and emergency service units were all planted on the bridge.
The man surrendered without incident several hours later. He was taken to Columbia Presbyterian where he is currently being evaluated.
Traffic delays started to mount before noon and were initially just 30-minute delays, but the delays quickly grew to more than 90 minutes at the peak -- on both the upper and lower levels.
Initial reports claimed that there was more than one person scaling the bridge, but police confirmed that at least one man climbing surrendered without incident.
The Port Authority warned of extensive traffic delays even though police activity has cleared.
It is unclear why the man was climbing the bridge.
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