Just wanted to say thank you for your help. My 6th grade daughter built the bridge by herself following your instructions. She won Second Place in her school’s bridge building contest. It held 124 lbs and didn’t even crack. They ended the contest after that due to time constraints so we don’t know how much it would hold. They then weighed the surviving bridges and the lightest bridge won. They will be repeating the contest in the Spring so we will definitely be visiting your site again.