What number does Macau West Bay refer to?

The number 3. Macau Xiwan Bridge is a cross-sea passage connecting Macau Peninsula and Taipa Island in China Special Administrative Region. It was operated from.10.7 in 2002 to.10.9 in 2005, with a total length of1825m and a main bridge of 400m. The upper layer of the bridge is a two-way six-lane expressway with a design speed of 80 km/h, and the lower layer is a two-way light rail. Pedestrians are forbidden to pass, and the total project cost is 560 million patacas. The main tower adopts the shape of "meter", which is not only the first in the world, but also unique and meaningful: "meter" is the initial letter of Macao, and the Roman numeral "III" and Arabic numeral "3" mean the shape of "meter" of the third bridge (namely Friendship Bridge, Governor's Jumping Horse Bridge and Xiwan Bridge), which is also the landmark of Macao.