It was partially destroyed in 1961 by a fire, which was set by two boys. The fire killed 23-year-old firefighter Frank Kinsler when his truck fell 50 feet into the chasm.[4] It was rebuilt for freight service in 1967, but was closed and boarded up in 1985 with the discontinuation of Northwestern Pacific Railroad services.[3][2] The state-owned North Coast Railroad Authority and the Golden Gate Bridge, Highway and Transportation District took ownership of the tunnel in the 1970s and was thereafter acquired by SMART in 2003.[3]
It was retrofitted by SMART for a cost of $3 million in 2015.[2] The 2017 California floods caused damage to the tunnel, delaying system's opening testing for three weeks.[1]