The Hong kong-Zhuhai-Macao Bridge is the world's longest bridge having 34-mile (55-kilometer) length build with cost of $20 billion. The government of mainland China, Hong kong and Macau, as well as some banks helped pay for the bridge. It took nine years to construct and it reduce travel time from 3 hours to 30 minute.
The structure consists of three cable-stayed bridges, an undersea tunnel and four artificial islands. Artificial islands were built in shallow waters to buoy the bridge's crossing. This bridge is designed to last for 120 years and withstand earthquakes of 8 degrees on a Richter scale.
This bridge also boosts Hong Kong tourism, finance and commerce. It has traffic volume of more than 8,900 vehicles per day in average with speed limit of 100km/hr.
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