The given maps compare the creation time and the costs of two different road tunnels in the same location.
Overall, from the first map, it is clear that the road tunnel was located underwater and was built between 1986 and 1998. In contrast with the second tunnel, it was constructed from 2002 to 2006 and is situated below a concrete road.
On the one hand, the cost of the road tunnel from the first map was approximately 555 million. It was located under the bridge and sea, where cars could drive to sand. The height of this construction was about one and a half metres, while the width of the road was around 2.2 kilometres. On the other hand, the second tunnel, which was created in the 21st century, lies under the city’s road. The height and the width of this tunnel accounted for 2.5 metres and 3.6 kilometres, respectively. In addition, the materials of the second road tunnel were stone and clay, which made it more reliable and able to withstand a heavier load.
