The maps compare two tunnel construction projects in terms of time, money spent, and their depth, length, and capacity.
Overall, both tunnels were constructed over a long period, with the second tunnel taking less time despite its complexity. It is also noteworthy that there is a significant price disparity between the two.
The first tunnel was constructed between 1986 and 1998, located below sea level, beneath a bridge. It took 12 years to build and cost 555 million dollars. Other significant figures include a depth of 1.5 meters, a length of 2.2 kilometers, and a capacity for 2 cars.
In contrast, the second tunnel is considerably more complex than the first. It was constructed in just 4 years, from 2002 to 2006, at a staggering cost of 1.1 billion dollars, which is twice the expense of the first tunnel. Located beneath a busy road, this tunnel reaches a depth of 2.5 meters and a length of 3.6 kilometers. It is designed to accommodate 3 car lanes, with one lane facing backward and the other two facing forward.