Reducing the amount of energy needed to open and close movable bridges can improve their green profile (see box below).
Going green
It is time for the bridge industry to start working towards a ‘green’ standard by which to design and build bridges. Scott Snelling suggests how this could work
Progressive corrosion in the suspender cables of Panama’s 50-year-old Bridge of the Americas led to their replacement earlier this year. Patrick Ladret reports
