Fort McHenry Tunnel By shooby Jan 10, 1980 Final approval to begin construction Period: Jan 10, 1980 to Nov 23, 1985 Project Timeline May 7, 1980 Break ground Oct 5, 1981 First tunnel tubes lowered Apr 11, 1983 Last of the tunnel tubes is lowered into place Nov 23, 1985 Tunnel opening ceremony
