| 摘要 |
PROBLEM TO BE SOLVED: To provide a high level road for an automobile juxtaposed with a small road and an ordinary road in layers, capable of largely reducing construction cost, by largely reducing a bridge main groove width, by effectively introducing the small road in a width constitution of a bridge. SOLUTION: A bridge main groove is formed into a plural-layer deck structure of three layers or more, and the small road or the ordinary road is arranged in respective deck units. Among the road arranged in a plurality of layers, the road (a small type and the small road or an ordinary type and the ordinary road) of at least the same two layers is formed as an inverse directional one-way traffic road without arranging a median divider strip, and the other road is formed as a facing traffic road provided with a median divider strip. A bridge structure is used for the high level road for the automobile juxtaposed with the small road and the ordinary road in layers, and is formed into a structure capable of providing a deck of three layers or more. At the beginning, the ordinary road or the small road is arranged on a deck of two layers or more, and in the future, a horizontal girder is arranged in a space part without arranging the deck, and a new deck can be extended by arranging a vertical girder on the horizontal girder. COPYRIGHT: (C)2006,JPO&NCIPI
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