Ashley Ramirez, the mother of Poseidon Quinones, is suing the city for $7.5 million.
The boy was injured when he crashed his sled into a bale of hay at the foot of a hill.
The city has received 205 notices of claim for the March explosion that killed eight people.
Comptroller Scott Stringer's office is reviewing the claim.
Melanie Chandan filed a notice of claim against the MTA, saying the derailment traumatized her.
The chauffeur said he was simply taking his longtime boss to run errands.
Elisa Toro, of The Bronx, was killed in December in a crash on the bridge's exit ramp.
Diana Mathes wants more than $5 million after fracturing her arm in the fall.
The pedestrians have filed notices of claim, alleging they tripped over the bicycle-sharing stations.
The family of Noel Polanco has filed a $20 million notice of claim, according to reports.
The St. Nicholas Greek Orthodox Church plans to sue the Port Authority for the right to rebuild at Ground Zero.
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