1. Historical Places
It remains the world's tallest freestanding masonry structure, constructed entirely of stacked granite and marble blocks with no metal structural supports. ... Special scaffolding had to be used during the outside phase of the process to avoid drilling holes into the granite and marble blocks. The special scaffolding was designed to push against the building, much like a rubber band wrapped around a block of stone. ... The total length of the bridge spans 1.2 miles. ... The bridge sways 27 feet to withstand winds of up to 100 miles per hour. ...
- Word Count: 3266
- Approx Pages: 13
- Grade Level: High School