This is a list of disasters that have occurred in Massachusetts organized by death toll.
United Airlines Flight 175 was a domestic passenger flight from Logan International Airport in Boston to Los Angeles International Airport in California that was hijacked by five al-Qaeda terrorists on the morning of September 11, 2001, as part of the September 11 attacks. The aircraft involved, a Boeing 767-200 carrying 65 passengers and crew, was deliberately crashed into the South Tower of the World Trade Center in New York City, killing everyone aboard and causing the deaths of more than 600 people in the South Tower's upper levels in addition to an unknown number of civilians and emergency personnel on floors beneath the impact zone. Flight 175 is the second-deadliest plane crash in aviation history, surpassed only by American Airlines Flight 11.
The Maurice J. Tobin Memorial Bridge is a cantilever truss bridge that spans more than two miles (3.2 km) from Boston to Chelsea over the Mystic River in Massachusetts. The bridge is the largest in New England. It is operated by the Massachusetts Department of Transportation and carries U.S. Route 1. It was built between 1948 and 1950 and opened to traffic on February 2, 1950, replacing the former Chelsea Bridge. The 36-foot (11 m)-wide roadway has three lanes of traffic on each of the two levels with northbound traffic on the lower level and southbound traffic on the upper level.
Norwood Depot is an MBTA Commuter Rail Franklin/Foxboro Line station located in downtown Norwood, Massachusetts. The station has two side platforms serving the two tracks of the Franklin Branch, each with a mini-high section for accessibility. The Norfolk County Railroad opened through South Dedham in 1849, with a station at the modern location. It was renamed Norwood in 1872. The line came under control of the New York, New Haven and Hartford Railroad in 1895. The Massachusetts Bay Transportation Authority (MBTA) began subsidizing service in 1966 and purchased the line in 1973. Under the MBTA, renovations to the station were made around 1977 and 1992.
Norwood Central station is an MBTA Commuter Rail Franklin/Foxboro Line station located near downtown Norwood, Massachusetts. The station has two side platforms serving the two tracks of the Franklin Branch, each with a mini-high section for accessibility. It serves as a park-and-ride location for Boston's southwest suburbs; with 1,041 daily riders it is the busiest station on the line outside Boston. The former station building, a one-story yellow brick structure, has been converted to commercial use.
American Airlines Flight 11 was a domestic passenger flight that was hijacked by five al-Qaeda terrorists on the morning of September 11, 2001, as part of the September 11 attacks. The hijacked airliner was deliberately crashed into the North Tower of the World Trade Center complex in New York City, killing everyone still alive aboard the flight and resulting in the deaths of more than one thousand people in the top 18 stories of the skyscraper in addition to causing the demise of numerous others below the trapped floors, making it not only the deadliest of the four suicide attacks executed that morning in terms of both plane and ground fatalities, but also the single deadliest act of terrorism in human history and the deadliest plane crash of all time. The aircraft involved, a Boeing 767-200(ER) with 92 passengers and crew, was flying American Airlines' daily scheduled morning transcontinental service from Boston Logan International Airport in Massachusetts to Los Angeles International Airport in California.
The September 11th attacks were the deadliest terrorist attacks in human history, causing the deaths of 2,996 people, including 2,977 victims and 19 hijackers who committed murder–suicide. Thousands more were injured, and long-term health effects have arisen as a consequence of the attacks. New York City took the brunt of the death toll when the Twin Towers of the World Trade Center complex in Lower Manhattan were attacked, with an estimated 1,600 victims from the North Tower and around a thousand from the South Tower. Two hundred miles southwest in Arlington County, Virginia, another 125 were killed in the Pentagon. The remaining 265 fatalities included the ninety-two passengers and crew of American Airlines Flight 11, the sixty-five aboard United Airlines Flight 175, the sixty-four on American Airlines Flight 77 and the forty-four who boarded United Airlines Flight 93. The attack on the World Trade Center's North Tower alone made the September 11 attacks the deadliest act of terrorism in human history.
Northeast Airlines Flight 258 was a scheduled domestic passenger flight from New York's La Guardia Airport that crashed while trying to land at Nantucket Memorial Airport, Massachusetts, at 11:34 on the night of August 15, 1958. All three crew-members and 20 of the 31 passengers were killed, among them Gordon Dean, former chairman of the United States Atomic Energy Commission.
Thomas F. Sullivan was an American government official who served as commissioner of the Boston Police Department and chairman of the city's transit department.
Michael T. Kelleher was an American insurance executive and government official who served as Commissioner of the Boston Fire Department from 1950 to 1953.
On July 4, 2021, a Lockheed C-130 Hercules aircraft of the Philippine Air Force (PAF) crashed after an attempted landing at Jolo Airport in Sulu, Philippines. With 53 deaths, of which 50 people were on the aircraft and 3 on the ground, the incident is the deadliest aviation accident in Philippine military history, the fourth deadliest on Philippine soil, and the second deadliest to occur in 2021, behind Sriwijaya Air Flight 182.
The Pickwick Club collapse occurred in Boston, Massachusetts United States on July 4, 1925. It killed 44 people, making it the deadliest building collapse in Boston's history and the second deadliest accident in Boston at that time.
The Wollaston disaster was a railroad accident that occurred on October 8, 1878, in the Wollaston neighborhood of Quincy, Massachusetts. 19 people were killed and 170 were injured when an incorrectly placed switch caused the derailment of an excursion train returning from a sporting event. The conductor who placed the switch was convicted of manslaughter, but the conviction was overturned on appeal.
The Swampscott train wreck occurred on February 28, 1956, in Swampscott, Massachusetts when a Danvers–Boston commuter train crashed into the rear of a stopped Portsmouth–Boston local train just north of the station during a snowstorm. The collision, blamed on the engineer operating at unsafe speeds for the conditions, killed 13 people and injured 283.