my step son wes a bridge builder, he;s a good ole redneck.not real swift. but he was the smartest on the crew.....skeery thought. although Ive driven across the bridges many many times as have millions of others....that fact dont give me a warm&fuzzy feeling. with that said.he was a stickler on safety. he watched as the rest of the moron crew demolished a huge crane after he told them how to do it and how not to do it....they did it their way. no wonder why there are oh somany crane ax-a-dents. you cant fix stupid