Humber Bridge single-span suspension bridge for 16 years from its opening in July 1981, until the opening of the Great Belt Bridge in June 1997, and was relegated to third place with the opening of the Akashi Kaikyō Bridge in April 1998. It is now the eighth longest single-span suspension bridge. The central span, at 1410 m (4640 ft), is the UK's longest. It remains the longest single-span suspension bridge in the world that one can cross on foot or by bicycle. The bridge is crossed twice during the annual Humber Bridge half marathon. In July 2013, work began on introducing a
Black Suspension Bridge file, 42 Havasupai tribesmen carried the one-ton, 550-foot suspension cables. Black Suspension Bridge The Black Suspension Bridge also known as the Kaibab Suspension Bridge spans the Colorado River in the inner canyon of Grand Canyon National Park. It is part of the South Kaibab Trail and is the river crossing used by mules going to Phantom Ranch. The Black Bridge and Silver Bridge, located about 700 meters downstream, are the only spans in hundreds of river miles. The Black Bridge was built in 1928. As motorized vehicles could not access the construction site, humans and mules transported the 122 tons