The illustrations provide information about two roadway tunnels located in two cities in Australia.
Overall, tunnel A and tunnel B show the difference between their lengths and widths; they also provide information about their construction costs and time durations.
Tunnel A shows that its length is 25 meters and width is 2.2 kilometers. Its construction time period was 5 years (1987-1992). Its total construction cost was 556 million dollars. Tunnel A’s structure was built on a pond; transport was by ship, and its upper section is a bridge, while its lower section is a tube tunnel. The bridge and tunnel both carry one large and one small vehicle, such as a lorry and a car.
On the other hand, tunnel B was built later, from 2004 to 2007. Its different structure is made of one road; its bridge is used for going to the city, and its tunnel is used for coming from the city. Its construction cost was 1.1 billion dollars, and both sides (bridge and tunnel) can accommodate three vehicles (two small cars, one large vehicle).