ANOTHER Sinkhole: Brooklyn's Classon Ave & Park Ave Collapses — Fourth Ground Failure in Eight Days

A sinkhole opened in the middle of Classon Ave and Park Ave in Brooklyn on May 21, prompting NYPD and Chaveirim response. It's the fourth sinkhole in the NYC...

Updated May 21, 2026
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ANOTHER Sinkhole: Brooklyn's Classon Ave & Park Ave Collapses — Fourth Ground Failure in Eight Days

May 21, 2026. A sinkhole has opened in the middle of the street at Classon Avenue and Park Avenue in Brooklyn. NYPD and @BklynChaveirim are on scene securing the area. This is the fourth sinkhole in the New York metro area in eight days.


Sinkhole at Classon Ave and Park Ave in Brooklyn — NYPD on scene

Source: @WMSBG (Williamsburg News) — NYPD and Brooklyn Chaveirim securing the scene.


Four Sinkholes in Eight Days

The pattern we documented two days ago is accelerating.

#DateLocationWhat Happened
1May 14LIE, Melville (Exit 49N) — Suffolk County10-foot sinkhole swallowed a car. Caused by contractor damage to a sewage project. 2 lanes closed 24+ hours.
2May 20, 11 AMLaGuardia Airport, Runway 4/22 — QueensSinkhole discovered during routine inspection. Runway shut down, 200+ flights canceled. Built on 1930s fill over Flushing Bay.
3May 20, ~3 PME 180th St, BronxSchool bus with 39 children and 4 adults got stuck. Heavy-duty tow truck needed. No injuries.
4May 21Classon Ave & Park Ave, BrooklynSinkhole opened in the middle of the street. NYPD and Chaveirim on scene. Under investigation.

Four sinkholes. Four boroughs/counties. Eight days. The Poisson analysis we published calculated the probability of three in six days at 0.3%. Four in eight days pushes the statistical anomaly even further — this is a systemic infrastructure pattern, not isolated incidents.


The Trigger: Last Night’s Storm

This Brooklyn sinkhole appeared less than 24 hours after the severe thunderstorm that dumped 6 inches of rain across the metro area. As we explained in our geology analysis, sinkholes don’t appear during the rain — they appear 3-7 days after, once the elevated groundwater has scoured enough subsurface material to collapse the surface.

The lag window we predicted (May 23-27) just moved up. Last night’s 6 inches of rain accelerated the timeline. Brooklyn’s aging water and sewer infrastructure — some of it dating to the 19th century — is now sitting in saturated glacial deposits that are actively eroding from below.

Just hours before this sinkhole appeared, NYC’s own Department of Environmental Protection confirmed that the sewer system was built to handle 1.75 inches per hour but last night’s storm delivered 6 inches per hour — a 3.4x capacity exceedance.

@NYCWater (156 likes): “NYC’s sewer system was built to handle 1.75”/hour but yesterday’s storm brought the equivalent of 6”/hour in some areas. Our crews worked overnight to respond and are continuing today.”

When the sewer system is running at 340% of design capacity, water doesn’t just flood the streets — it forces its way underground through every crack, joint, and weak point in the pipe network, accelerating the piping erosion that creates sinkholes.

Classon Ave and Park Ave is in Clinton Hill/Bedford-Stuyvesant — an area with combined sewers from the early 1900s and a shallow water table. The intersection sits on glacial outwash deposits similar to the South Shore of Long Island — exactly the geology Dr. Wei Li at Stony Brook University identified as most susceptible to piping erosion.


What This Means for Long Island

If Brooklyn is getting sinkholes 24 hours after the storm, Long Island is next. The storm cell moved west to east — Brooklyn got the rain before Nassau and Suffolk. The same saturated glacial deposits extend across the Queens/Nassau border into western Nassau County.

Our geology analysis identified the highest-risk corridors on Long Island:

  • South Shore outwash plain: Hempstead, Baldwin, Freeport, Oceanside, Long Beach, Lido Beach
  • Moraine transition zones: Melville (already hit), Huntington Station, Plainview, Bethpage
  • Areas with pre-1960s infrastructure: Garden City, Hempstead, Mineola, Freeport, Valley Stream

The lag window for Long Island sinkholes from last night’s storm: now through May 27. Watch for new pavement depressions, cracking, or standing water where there wasn’t water before.


Were You Injured?

If you’ve suffered injury or property damage from a sinkhole, infrastructure failure, or storm-related road hazard, you may have a legal claim — especially if municipal infrastructure failure contributed to the incident. New York law requires a 90-day Notice of Claim for claims against the city or county under GML §50-e.

Free consultation — Law Office of Jason Tenenbaum, P.C. — Long Island and NYC personal injury attorneys.

📞 (516) 750-0595 — Available 24/7


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Frequently Asked Questions

What should I do if I'm in a car accident on Long Island?

Call 911 immediately if anyone is injured or if the vehicles can't be moved safely off the roadway. Stay at the scene — leaving the scene of an accident with injuries is a crime under New York Vehicle and Traffic Law §600. Exchange license, registration, and insurance information with every other driver involved. Take photographs of every vehicle, the position of the vehicles before they're moved, all license plates, the road surface, traffic signs, and any visible injuries. Get the names and phone numbers of every witness — police often won't capture bystander witnesses on their own. Seek medical attention within 24 hours even if you feel fine; soft-tissue injuries and concussions can take a day or two to present, and a delayed medical visit weakens an injury claim. In Nassau County, NCPD responds outside of incorporated villages. In Suffolk County, SCPD covers the five western towns; East End towns have their own forces. New York State Police Troop L responds to accidents on state highways across both counties.

How long do I have to file a no-fault claim in New York?

Thirty days. New York Insurance Law §5102 requires you to file a Personal Injury Protection (PIP/no-fault) application with the insurer of the vehicle you were in (or, if you were a pedestrian or cyclist, with the insurer of the striking vehicle) within 30 days of the accident. Missing the 30-day deadline can void your no-fault benefits — that's up to $50,000 in medical bills and 80% of lost wages (capped at $2,000/month) per injured person. The form is the NF-2 application; your insurance carrier provides it on request. New York no-fault is a true PIP system: it pays regardless of who caused the crash.

What counts as a "serious injury" under New York law?

Under Insurance Law §5102(d), a "serious injury" is one that meets at least one of these categories: (1) death; (2) dismemberment; (3) significant disfigurement; (4) a fracture; (5) loss of a fetus; (6) permanent loss of use of a body organ, member, function, or system; (7) permanent consequential limitation of use of a body organ or member; (8) significant limitation of use of a body function or system; or (9) a medically determined injury that prevents the injured person from performing substantially all daily activities for at least 90 of the first 180 days following the accident. Only injuries that meet one of these nine categories create the right to sue the at-fault driver for pain and suffering damages — short of that threshold, recovery is limited to no-fault PIP benefits. Disputes over whether an injury meets the threshold are the single most-litigated issue in NY motor-vehicle cases.

How long do I have to sue after a Long Island car accident?

Three years from the date of the accident for personal injury claims under CPLR §214(5). Wrongful death claims have a two-year deadline under EPTL §5-4.1. If a government entity is involved (a county vehicle, a road defect on a state highway, a defective traffic signal, a county bus), you must file a Notice of Claim within 90 days under General Municipal Law §50-e — that's a non-negotiable jurisdictional deadline, and missing it usually bars the claim entirely. Property-damage-only claims have the same three-year clock. The clock starts on the day of the accident, not the day you discover the full extent of an injury.

Can I still recover compensation if I was partly at fault?

Yes. New York is a pure comparative negligence state under CPLR §1411. Even if you were 90% at fault, you can still recover 10% of your damages. (A pending 2026 budget proposal would change this to a 51% bar — meaning a plaintiff who is more than 50% at fault would recover nothing — but that hasn't passed.) Insurance carriers routinely try to inflate the injured driver's percentage of fault to reduce payouts. The percentage assignment is decided by the jury at trial (or negotiated during settlement); it isn't fixed by the police accident report and isn't binding even when the report assigns fault. Reporting practice and the actual legal apportionment are separate questions.

Who can file a wrongful death claim in New York?

Under EPTL §5-4.1, only the personal representative (executor or administrator) of the deceased's estate can bring a wrongful death action — not the deceased's family directly. The estate is opened in Surrogate's Court of the county where the deceased lived. Damages flow to the spouse, children, parents, and other distributees defined under EPTL §4-1.1. Recoverable damages include loss of financial support, loss of parental guidance for surviving children, and conscious pre-death pain and suffering (recovered through a separate "survival action" under EPTL §11-3.2). New York is unusual in NOT allowing surviving family members to recover for their own emotional grief — only economic losses to the estate. The wrongful-death two-year statute of limitations is shorter than the three-year personal-injury statute, so the deadline is critical.

How do I get a copy of the police accident report?

If local police responded to the scene, the report is filed under an MV-104A form. In New York State, you can request a copy through the DMV at https://dmv.ny.gov/vehicle-safety/get-copy-accident-report (roughly $7 online, $10 by mail) once the responding agency has uploaded it to the state system, which usually takes 5-10 business days. NCPD and SCPD also have their own direct-request processes through the precinct that responded. If you weren't injured but the property damage exceeded $1,000, New York VTL §605 requires you (the driver) to file your own MV-104 report with the DMV within 10 days regardless of whether police responded.

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