The Akashi Kaikyo Bridge is the longest suspension bridge in the world. It connects Kobe on Honshu island to Iwaya on Awaji island in Japan, spanning the Akashi Strait. Before the bridge was built, ferries transported people across the dangerous strait, which experiences severe storms. The bridge's central span of 1,991 meters is supported by two massive steel towers that are 282.8 meters tall. Construction of the mega-project began in 1988, required over 10 years to complete, and cost $4.3 billion. When it opened in 1998, the Akashi Kaikyo Bridge became an engineering marvel and a symbol of national pride in Japan.

1. Akashi Kaikyo
Bridge
The longest suspension bridge
with its greatest Engineering feat.
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Presented by :
Ahsan Tonu
Dhaka University of Engineering and
Technology (DUET)

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3. Content
Introduction
Location
Reason to built
Why was this design chosen ?
project overview
Bridge geometry
Geographical profile
Design & construction
Features
Improvements
references
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4. introduction
The highest, longest and most expensive suspension bridge on earth,
Megastructure Akashi Kaikyo bridge caries a huge 6 line free way linking
Kobe with the island of Awaji in to the south. For the people of the fishing
villages on rural south island it's a vital link to hospitals, schools and the
city on the main land. For Japan it's a symbol of national pride, it is the final
linking network of bridges that will unite all four islands. This bridge
provides rapid transportation, rapid access and opening up the island of
shokoko to business commerce and tourism.
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5. Location
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7. Satellite View
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8. Reason to build
Before the akashi
kaikyo bridge was
built , ferries carried
passengers across the
akashi strait in japan.
This dangerous
waterway often
experiences severe
storms and in 1955 two
ferries sank in the
strait during storm
killing 168 children.
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9. Why was this design chosen ?
Suspension bridge was the best
suitable bridge type for this wide
strait.
Having only two major supporting
tower this type of bridge do not
disturb the marine traffic.
This type of bridge is the best for
considering japan’s seismic
condition that can withstand every
kind of load caused by typhon ,
earthquake or heavy traffic.
And one of the important cause is its
large span that produce significant
amount of moment.
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10. Project
Overview
 Total length : 3991 m
 Central span : 1991 m
 Height : 282.8 m
 Clearance Below : 65.72 m
 End span : 960 m
 No of span : 3
 No of lane : 6
 Purpose : Roadway
 Other name : Pearl Bridge
 Type : Suspension Bridge
 Crosses : Akashi Strait
 Country : Japan
 Locate : Awaji island & Kobe
 Construction Begin : 1988
 Construction end : 1998
 Opened : April 5,1998
 Cost : $4.3 billion
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11. Cross section of Deck
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12. Profile of bridge
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13. Geological Profile
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14. Physical condition and design specifications
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15. Partners involved
Maintained by : Honshu-Shikoku Bridge Authority
Designer : Satoshi Kashima
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16. DESIGNS AND CONSTRUCTION
Steps in construction
Excavation
Foundation
Laying of towers
Cables
deck
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17. foundation
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18. Laying of towers
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19. Cables
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21. Cable specifications
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22. Deck
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23. Summarization of Construction by figures
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24. What!
 It took two million
workers ten years to
construct the bridge
181,000 tones of steel and
1.4 million cubic metres
of concrete . The steel
cable used would circle
the world seven times.
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25. Load Distribution
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26. Features
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27. Continue…..
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28. Continue…
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29. Improvements
Substructures Cables
 Prolonging the life of
concrete structures.
 Maintenance for underwater
steel structures.
 Dry air injection system for
main cables.
 The non destructive
inspection for suspender
rope.
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31. References
 http://www.fhwa.dot.gov/publications/publicroads/98julau
g/worlds.cfm
 http://everything2.com/title/Akashi%2520Kaikyo%2520Bri
dge
 http://structurae.net/structures/akashi-kaikyo-bridge
 http://en.wikipedia.org/wiki/Akashi_Kaikyo_Bridge
 http://www.pbs.org/wgbh/buildingbig/wonder/structure/ak
ashi_kaikyo.html
 http://www.technologystudent.com/index.htm
 http://natgeotv.com/ca/big-bigger-biggest/videos/the-
akashi-kaikyo-bridge
 http://www.technologystudent.com/culture1/akashi1.htm
 https://www.pinterest.com/awajicity/peal-bridge-akashi-
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32. Thank You 32

33. Prepared by…..
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