抄録
This paper contains, firstly, a preliminary review on the “General survey of civil engineering heritages in the Chubu Provinces constructed between 1867-1945”; secondly and mainly, a proposal on the judgment criteria evaluating their importance as heritages from engineering viewpoint especially with regard to the road bridges, which forms more than 40 per cent of all structures. This survey, organized by JSCE, is the first trial of this kind, and is expected to be a beginning of the forthcoming nationwide survey. In the survey, more than 1000 structures were observed at the site by the author, and were classified into four categories tentatively according to three points of judgment, that is, engineering, aesthetic and genealogical viewpoints. In that occasion, the author were mostly suffered by the judgment of road bridges from engineering aspects, because numbers of bridges were so large and no standard of appraisal. Now that things have come to this pass, the author must have established a judgment criteria on the road bridges from engineering viewpoint based on the bibliographical bridge data of the corresponding era in Japan. And by utilizing the accumulated data, the author tries to explain the decision process of types of bridges in that era.
