<Tr> <Td> The Transbay Redevelopment Area </Td> <Td> San Francisco, California </Td> <Td> Under Construction </Td> <Td> $4,500,000,000 </Td> <Td> The redevelopment of began in June 2005 and is expected to be fully Completed around 2030, includes a new Transbay Transit Center and the newly opened Salesforce Tower . The Salesforce Tower is a 1,070 - foot Supertall Office Skyscraper just completed in the South of Market district of downtown San Francisco at a cost of $1,100,000,000 . </Td> </Tr> <Tr> <Td> San Francisco Shipyard and Candlestick Redevelopment </Td> <Td> San Francisco, California </Td> <Td> Under Construction </Td> <Td> $8,000,000,000 </Td> <Td> Set to be Completed sometime after 2028 . </Td> </Tr> <Tr> <Td> Treasure Island Redevelopment </Td> <Td> San Francisco, California </Td> <Td> In Development </Td> <Td> $6,000,000,000 </Td> <Td> Set to be Completed by 2028 . </Td> </Tr> <Tr> <Td> The Mission Bay Redevelopment </Td> <Td> San Francisco, California </Td> <Td> Under Construction </Td> <Td> $1,000,000,000 </Td> <Td> </Td> </Tr>

Where was the largest construction project ever undertaken