Ikitsuki Bridge

Ikitsuki Bridge
Coordinates	33°21′11″N129°26′17″E / 33.3531°N 129.4380°E / 33.3531; 129.4380
Locale	Ikitsuki, Nagasaki
Official name	Ikutsuki Bridge
Characteristics
Design	Continuous truss bridge
Material	Steel
Width	6.5 metres
Height	18 metres
Longest span	400 metres (1,312.336 ft)
History
Construction start	1983
Construction end	1991
Location

The Ikitsuki Bridge is a continuous truss bridge that connects Ikitsuki to Hirado Island. Completed in 1991, it has a main span of 400 meters (1,300 feet). ^[1] It is the longest continuous truss bridge in the world. ^[2]

History

The bridge allows automobile access from Ikitsuki to Hirado and the rest of Japan. Previously, the only option to travel off Ikitsuki was by ferry to various ports in Kyūshū.

In 2009, a crack which seriously damaged the safety of the bridge was found in a diagonal member near an 27 intermediate pier during an inspection for determining points to be annually inspected. ^[3] The crack grew to be 20 cm long, and was thought to be caused by wind-induced vibrations.

See also

• List of longest continuous truss bridge spans
• Truss bridge

References

1. Civil Engineering in Japan, Volumes 29-31. Japan Society of Civil Engineers. 1990. p. 183.
2. "Archived copy" (PDF). www.aisc.org. Archived from the original (PDF) on 1 June 2002. Retrieved 22 May 2022.
3. Wang, Q.; Nakamura, S.; Okumatsu, T.; Nishikawa, T. (2017-02-01). "Comprehensive Investigation on the Cause of a Critical Crack Found in a Diagonal Member of a Steel Truss Bridge". Engineering Structures. 132 (0). ISSN   0141-0296.

^[1]

1. "Ikitsuki Bridge | bridge, Japan".