|Structure name||Shinkawa Overpass|
|Structure type||Continuous two-span extra-dosed PC girder bridge|
|Structural factors||Bridge length 111.0m
Span length 51.375＋58.375m
|Client||Hokkaido Railway co.|
|Designer||Japan Transportion consultants co.,Ltd|
|Route name||JR Sassyo Line|
This bridge crosses over National Highway No. 5 and the expressway. In this bridge, 75% of all vertical stress is concentrated at the piers in the center of the structure, so lead rubber bearing (LRB) was used to disperse horizontal force at each pier when an earthquake occurs. As a result, the width in the axial direction was set 2.5 meters, 3.0 meters, and 2.5 meters at each of the piers to achieve good balance. During the construction period, as a result of the extrusion method the tension was placed in the cables one after another, resulting in transformations in the bridge stress, so the design behavior was compared with the actual behavior, and various measurements were taken to assure the actual construction conditions.
This bridge was awarded the 1999 Japan Society of Civil Engineering Hokkaido Branch Technology Award, and the 1999 Japan Prestressed Concrete Institute Award.