The Rockland-bound side of the span was reopened before 5:30 p.m., with one lane on the Westchester-bound side expected to follow suit by 7 p.m., authorities said.
A second lane on that side was to open an hour later. The third lane would remain closed until repairs could be made Wednesday morning, they said.
Both sides were closed after a hammer crane used to drive piles for construction of a new bridge toppled across the current span around noon.
Traffic diverted to the George Washington Bridge sent area New York City arteries into gridlock early in the afternoon.
“Miraculously, there were no serious injuries,” Gov. Andrew Cuomo said said.
A worker was injured, as were two occupants of cars involved in crashes while avoiding the crane, Cuomo said. None of the injuries was life-threatening, he said.
“We do not know why the crane collapses,” the governor said during an afternoon news conference. “Dozens and dozens of cranes have been operating at the bridge for months.”
Click here to follow Daily Voice Fort Lee and receive free news updates.