The diagrams below give information about two road tunnels in two Australian cities. Summarize the information by selecting and reporting the main features and make comparisons where relevant.

The pictures illustrate some different features of two tunnels located in 2 separate regions in Australia.

It is clear that

there are numerous differences between the two tunnels.

Whereas

the old is not only shorter in terms of length, depth and duration of construction but

also

cheaper, compared to the recent.

Besides

, the former has fewer lanes for vehicles than the latter does. As can be seen, the first tunnel was built in 12 years from 1986 to 1998 with a cost of 555 million dollars,

while

it took only 4 years for the second one to be finished with a doubled expense of 1,1 billion dollars.

Moreover

, as the older has only 4 lanes for travelling, the figure for the newer is more with 6 lanes.

In addition

, the old 1.5-meter-deep tunnel was constructed under the layer of sand and water in a curved shape with a length of 2,2 kilometres. Meanwhile, the new one which was 3,6 kilometres long and 2,5 meters deep was erected under a layer of stone and clay in a less curved form.