I remember reading once there was gold under the North side of the bridge.
Here's a tale:
https://www.news.com.au/finance/a-f...492271465?sv=fc4790f74387d27c73cc6c2d89152353
Here's a tale:
https://www.news.com.au/finance/a-f...492271465?sv=fc4790f74387d27c73cc6c2d89152353