Too long for what there is to see. The guide was all the time looking at her watch waiting for the time to arrive to move to the next station. We spent plenty of time in different places of the bridge waiting to move to the next one. Later on I have been told it is a copy of the Sydney Habour bridge climb by 2 ex-Sidney Bridgeclimb workers. Unfortuntely the bridge is not the same nor the enthusiasment of the crew...