<Tr> <Th> Number of employees </Th> <Td> 1,545 </Td> </Tr> <Tr> <Th> Parent </Th> <Td> Metropolitan Transportation Authority </Td> </Tr> <Tr> <Th> Website </Th> <Td> Official website </Td> </Tr> <P> The Triborough Bridge and Tunnel Authority, doing business as MTA Bridges and Tunnels, is an affiliate agency of the Metropolitan Transportation Authority that operates seven intrastate toll bridges and two tunnels in New York City . In terms of traffic volume, it is the largest bridge and tunnel toll agency in the United States, serving more than a million people each day and generating more than $1.5 billion in toll revenue annually as of 2012 . </P>

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