After five years of construction, the tunnel was opened in October 1991by Queen Elizabeth ll, the tunnel initially had an advisory speed limit, but this was dropped in 2007 as accidents were rare in the tunnels.
The tunnel was opened in October 1991by Queen Elizabeth ll, the tunnel initially had an advisory speed limit. This was after five years of construction. The tunnel was opened in October 1991by Queen Elizabeth ll, this was dropped in 2007. This was after five years of construction. Accidents were rare in the tunnels.