Authority (MDTA), as it eliminated 51 traffic signals for through-traffic in Baltimore, and reduced neighborhood street commercial traffic by up to 40%. However, increased tunnel usage and high traffic volume led to the planning, construction, and opening of the nearby Fort McHenry Tunnel in 1985, creating the final link of Interstate 95 in Maryland. The Harbor Tunnel was then closed in phases for extensive rehabilitation, beginning in March 1987. It was fully reopened by 1990. In November 2007, the 50th anniversary of the tunnel serving travelers was observed. In November 2018, the MDTA started a multi-year project to replace the I-895 bridge spans north of the tunnel. The $189 million project also includes $28 million to repair and upgrade the tunnel itself; the entire project is scheduled to be completed by summer 2021. See also References External links Crossings of the Patapsco River Tolled sections of Interstate Highways Transportation buildings and structures in Baltimore Toll tunnels in Maryland Tunnels completed in 1957 Interstate 95 1957 establishments in Maryland Road tunnels in Maryland Immersed tube tunnels in the United States