Reddish Engineering Marvel News Today

>> thank you very much. >>gregg: 75 years ago an orange and reddish engineering marvel opened to traffic: the golden gate bridge in san francisco in the city by the bay. celebrating the anniversary in a big way, claudia is by the bridge with that breathtaking view. >>reporter: you know, crews say they are blown away by how well it was constructed and how knowledgeable those engineers were about the geology and the ground motion in this area back in the 1930s designing this with a number two penc...