Police arrested a man for allegedly starting a fire that disrupted traffic along the Henry Hudson Parkway yesterday. The blaze required 60 firefighters to extinguish. While no one was injured, but the median between the north- and south-bound parkways were blocked for an hour as 12 FDNY units were required to put out the urban wildfire. The suspected arsonist is a homeless man believed to be emotionally disturbed. The fire was noticed as park staff......