PSE&G controlled the leak at the intersection of East Main Street and Island Avenue but had to do repairs that will keep the eastbound lane of Main Street closed awhile, Police Chief Brian Gurney said.
Police set up detours, the chief said, adding that westbound traffic was moving.
No injuries were reported, he said.
Anyone living or working within 300-foot radius of the leak was moved from the area until authorities gave the all-clear.
The Ramsey Rescue Squad directed traffic for four hours.
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