Is Tsing Ma, a bridge built almost 20 years, a green building?

As a bridge, Tsing Ma bridge is a quite a green building based on the sustainability of materials and management. The Wind and Structural Health Monitoring System (WASHMS) is a sophisticated bridge monitoring system used in Tsing Ma bridge.

There are more than 350 sensors on the Tsing Ma bridge, the structural behavior of the bridges is measured 24 hours a day, seven days a week.

The sensors include accelerate meters, strain gauges, displacement transducers, level sensing stations, anemometers, temperature sensors and dynamic weight-in-motion sensors. They measure everything from tarmac temperature and strains in structural members to wind speed and the deflection and rotation of the kilometres of cables and any movement of the bridge decks and towers.

These sensors are the early warning system for the bridges, providing the essential information that help the Highways Department to accurately monitor the general health conditions of the bridges. Once when there is any problem is found on the bridge, the engineers can fix it as soon as possible.