As can be seen from the chart, there have been as different as chalk and cheese between two underground tunnel systems in two Australian cities. They have not been similar not only distant time or place but also size and environment.
The first tunnel was built under a suspension bridge between 1986 to 1998 with cost $555 millions while the latter located beneath highway was spend $1, 1 billion being constructed over period time 2002 to 2006. Looking at the map in more detail, system under bridge has been encompassed by sand but environment of the tunnel beneath highway has been stone and clay.
Regarding the first tunnel, its maximum length is 2, 2 kilometers, and it can be up to 1, 5 meters deep, so it only allows two to go parallel. The next system has been twice as big as that tunnel with 3, 6 kilometers long and 2, 5 meter deep, so three cars having same speed can easier to move
As can be
seen
from the chart, there have been as
different
as chalk and cheese between two underground
tunnel
systems in two Australian cities. They have not been similar not
only
distant time or place
but
also
size and environment.
The
first
tunnel
was built
under a suspension bridge
between 1986 to 1998
with cost $555 millions while the latter located beneath highway was
spend
$1, 1 billion
being constructed
over period time 2002 to 2006. Looking at the map in more detail, system under bridge has
been encompassed
by sand
but
environment of the
tunnel
beneath highway has been stone and clay.
Regarding the
first
tunnel
, its maximum length is 2, 2 kilometers, and it can be up to 1, 5 meters deep,
so
it
only
allows
two to go parallel. The
next
system has been twice as
big
as that
tunnel
with 3, 6 kilometers long and 2, 5
meter
deep,
so
three cars having same speed can easier to
move