The maps depict the layout of two road tunnels in two distinct Australian downtowns.
Overall, it is evident that the tunnel which was constructed later cost higher and was more extensive than the other one. Notably, the sites that the two tunnels were situated were different from each other.
Regarding the road tunnel which was erected in 1998, the total cost to construct this feature was 550 million dollars. While the road tunnel was 1.5 meters in width, its length was precisely 3.6 meters, which was similar to the remaining tunnel. Concerning the place, where it was positioned, the tunnel was beneath a colossal and stunning bridge, with the whole area built from sand.
Moving onto the tunnel which was officially opened in 2006, its width size was precisely 2.5 meters, which was more spacious than the earlier one in order to accommodate a greater volume of cars. By contrast, this road tunnel was below a large metropolis and the materials used to establish the area were stone and clay.
