The Triborough Bridge and Tunnel Authority (TBTA), doing business as MTA Bridges and Tunnels, is an affiliate agency of the Metropolitan Transportation Authority that operates seven toll bridges and two tunnels in New York City. The TBTA is the largest bridge and tunnel toll agency in the United States by traffic volume. It generated more than $2.4 billion in toll revenue from 335 million vehicles in 2023. As of 2023, its operating budget was $596 million; the budget is funded through taxes and fees.