Stretching 840 feet above and across the Colorado River and nine years in the making, these stunning images prove man’s ingenuity. This architectural wonder is a sight to behold and was finished in late 2010. Stretching 840 feet above and across the Colorado River and nine years in the making, these stunning images prove man’s ingenuity. This architectural wonder is a sight to behold and was finished in late 2010. 2001 Source