The Central Artery in Boston, Massachusetts is a notorious six-lane highway known for horrible traffic problems and an extremely high accident rate. A massive engineering undertaking, called the Central Artery/Tunnel Project, was started in 1991 to relieve the congestion and is now about 75% complete. The project's Web site is constantly updated with progress reports, milestones, and anything that is related to the "Big Dig." There are sections that discuss environmental issues, history, and the archaeological treasures that were uncovered during excavation. Photo and video galleries show various phases and the many obstacles that make this such a long and difficult project.