"A new cable-stayed bridge will soon change Boston's landscape. The Charles River crossing is part of the massive, $10.8 billion Central Artery/Tunnel (CA/T) project, scheduled for completion in 2004. The bridge itself will cost an estimated $87 million and will open to northbound traffic by July 2002. The foundations, like much of the Central Artery project, have been a challenge in Boston's difficult soils and constricted urban environment."