Who died in the Big Dig collapse?
Milena Del Valle
Milena Del Valle, 39, was crushed to death on July 10, 2006, when 12 tons of concrete ceiling panels fell from the roof of the Interstate 90 connector tunnel as she and her husband drove toward Logan Airport.
What happened to the Boston Big Dig?
By the end of December 2004, 95% of the Big Dig was completed. Major construction remained on the surface, including construction of final ramp configurations in the North End and in the South Bay interchange, and reconstruction of the surface streets.
How long did the Big Dig last in Boston?
The “Big Dig”, officially called the Central Artery/Tunnel Project (CA/T), was a largescale civil engineering project in Boston. Planning began in the early 1980s with the project finally being completed in 2007.
How much did the Big Dig go over budget?
After going 80 percent over its predicted budget, the Chunnel ended up costing a whopping $21 billion. In other words, if the cost of the Big Dig were a person, it’d be the 17th wealthiest person in the world.
How many workers died during the Big Dig?
According to the Mass Department of Transportation, there were nine (9) fatalities in the Big Dig Tunnels during that time frame, with seven involving handrails.
How deep underwater is the Sumner tunnel?
Later, non-commercial traffic was allowed to access the tunnel on weekends and holidays. In 2003, with the substantial completion of the I-90 portion of the Big Dig, the tunnel was opened to all traffic at all times. The tunnel is 8,448 feet (2,575 m) long, of which approximately 3,960 feet (1,210 m) are underwater.
How is tunnel built underwater?
Today, underwater tunnels are often created with humongous tunnel-boring machines (TBMs) — sometimes called moles. These machines cost millions of dollars, but they can create large tunnels in a very short time. A circular plate with disk cutters rotates to cut through rock as the machine inches forward slowly.
How deep is the Boston tunnel?
The Ted Williams Tunnel interface in East Boston between the land-based approach and the underwater section is 90 feet below the surface of Boston Harbor, the deepest such connection in North America. The project’s seven-building ventilation system is one of the largest highway tunnel ventilation systems in the world.
How much did Big Bertha cost?
The machine was 326 feet (99 m) long and weighed 6,700 short tons (6,100 t). The machine itself cost $80 million and is owned by Seattle Tunnel Partners, the project contractors.
What happened to the Big Dig tunnel ceiling panel?
The failure of the tunnel ceiling panel occurred on 10 th July 2006. The weight of the concrete ceiling panel was 24,000 kg, and its dimensions were 6.1 m x 12.2 m. The failure of the ceiling panel had impacted the traffic of Boston city and the Big Dig tunnel was closed for almost a year.
Should people connected to fatal Boston tunnel ceiling collapse face manslaughter charges?
Declaring that a fatal tunnel ceiling collapse in Boston last summer was “a crime,” Attorney General Thomas F. Reilly said yesterday that his office’s investigation into the July 10 death of Milena Del Valle has convinced him that people and companies connected with the tunnel’s construction should face manslaughter charges.
What caused the Big Dig ceiling to collapse?
The Big Dig ceiling collapse occurred on July 10, 2006, when a concrete ceiling panel and debris weighing 26 short tons (24,000 kg) and measuring 20 by 40 feet (6.1 by 12.2 m) fell in Boston’s Fort Point Channel Tunnel (which connects to the Ted Williams Tunnel ).
What happened to the Big Dig/Central Artery Tunnel?
As a result of the July 10, 2006 accident, several portions of Boston’s $14.6 billion Big Dig/Central Artery Tunnel Project were shut down. Ongoing investigations by federal and state officials following the accident uncovered additional problems almost on a daily basis. The NTSB identified several safety issues during its investigation: