The diagrams compare the key characteristics of road tunnels located in two different Australian cities. Overall, while both tunnels serve the same purpose of improving urban transport, they differ in terms of size, capacity, construction period, design, and cost.
The first tunnel, situated in City A, is relatively short, measuring only 2.2 kilometers in length, 1.5 meters in height, covered with sand, was constructed over a 16-year period, from 1986 and 1998. It consists of a two lanes in single direction. The construction cost was 555 million dollars.
By contrast, the second tunnel, located in City B, constructed between 2002 and 2006, is quite larger. It stretches for 3.6 kilometers long and 2.5 meters high, allows three lanes for cars. The outline of tunnel is covered with stone and clay. Reflecting its modernity, the constrution cost reached 1.1 billion dollars.
In summary, while the tunnel built between 1986 and 1998 in City A is quite smaller, lower in cost, and less advanced, the modern City B tunnel is longer, taller, and designed for larger amount of cars.