The issue happened during construction work on the bridge and led to a complete suspension of service on NJ Transit trains in and out of NY Penn Station just after 10:30 a.m. Thursday.
Cancellations and delays continued for the rest of the day.
Amtrak reported through its Twitter account multiple delayed departures from NY Penn Station due to "signal issues in the area."
NJ Transit rail tickets and passes continue to be cross-honored by NJ Transit buses and on PATH trains at Newark Penn Station, Hoboken and 33rd Street-NY.
Raritan Valley Line trains will originate and terminate in Newark for the remainder of the service day.
Midtown Direct service was diverted to Hoboken.
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