Minato Bridge
Coordinates: 34 ° 38 ′ 39 ″ N , 135 ° 26 ′ 15 ″ E
| Minato Bridge | ||
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| Official name | Minato Ōhashi | |
| construction | Truss - cantilever bridge | |
| overall length | 983 m | |
| Number of openings | 3 (without front bridge) | |
| Longest span | 510 m | |
| height | 60 | |
| opening | Upper deck: July 1974 Lower deck: 1991 |
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The Minato Bridge ( Japanese 港 大橋 , Minato Ōhashi ) is a 983 m long two-story truss bridge in the port of Osaka . The bridge, opened in July 1974, is the cantilever bridge with the third largest span in the world.
The bridge is used by the Hanshin Highway No. 4 Wangan-sen , with the lower deck not being put into operation until 1991. The structure consists of two symmetrical cantilever girders , which are connected with a 196 meter long suspension girder . The span is 510 m and is only exceeded by the Forth Bridge (521 m) and the Québec Bridge (549 m).
The construction of a cantilever bridge was chosen because of the poor subsoil and the better behavior in earthquakes and wind compared to suspension or arch bridges . The structure built by Kawasaki Heavy Industries should be as light as possible, which is why it is made of weldable high-strength steel that was specially manufactured for the application. The 4200-ton suspension bracket was delivered on the water and lifted into the assembly position in just three and a half hours.
literature
- Ichiro Konishi: World's Third Longest Cantilever Bridge . In: Civil Engineering — ASCE . tape 46 , no. 2 , 1976, p. 84-86 .
