The digram illustrates the differences between two road tunnels in one Australia city. Overall, tunnel B costs more than tunnel A since it is newer.
Looking at the tunnel A, it is prominent that it was built in 1987 to 1992. The cost of manufacture is 556 million dollars. Moreover, the size of the tunnel is 2.2 kilometres long and 25 metres deep. In addition, it is noticeably that the tunnel is twin tube which allows two cars at the same time to be on the road.
Moving on to the tunnel B, it is clear that this tunnel is newer and spent just 3 years to structure from just 2004 to 2007. The cost of this tunnel is 1.1 billion dollars. Its function is also cross section tunnel with a 3.6 kilometres long and 35 metres deep. Which allows up to 3 vehicles at the same time.
