The Maryland Transportation Authority maintains Maryland's eight toll roads, bridges and tunnels, as of November 2015. The MDTA also provides funding for revenue-producing transportation projects. Funding for projects and expenses comes from toll revenue.
The Fort McHenry Tunnel on Interstate 95 and the Baltimore Harbor Tunnel on Interstate 895 are the two tunnels maintained by the Maryland Transportation Authority. The 1.7-mile McHenry Tunnel is over the Patapsco River in Baltimore. The 1.4-mile Baltimore Harbor Tunnel, also under the Patapsco River, is part of Interstate 895 in Baltimore.
The MDTA's two toll roads are the John F. Kennedy Memorial Highway, which is Interstate 95 from northern Baltimore to the Delaware border, and the Intercounty Connector. The Intercounty Connector, known as Maryland Route 200, connects I-370 with I-95 and U.S. Route 1.
The Maryland Transportation Authority has four bridges. They include the Thomas J. Hatem Memorial Bridge, which crosses the Susquehanna River on U.S. Route 40, and the Francis Scott Key Bridge over the Patapsco River on Interstate 695 outside of Baltimore.
The other bridges are the Harry W. Nice Memorial Bridge across the Potomac River on U.S. Route 301 and the William Preston Lane Jr. Memorial Bridge across the Chesapeake Bay on U.S. Routes 50 and 301.
The Maryland Transportation Authority is overseen by a nine-member governing board. Members are appointed by the governor and join the board upon Senate consent.