@article{oai:shinshu.repo.nii.ac.jp:00003379, author = {永藤, 壽宮 and NAGATO, Toshimiya}, journal = {長野工業高等専門学校紀要, Memoirs of Nagano National College of Technology}, month = {Jun}, note = {It is generally proposed to set aim 200 years as span of fatigue design. It is significant to keep the good condition of bridge for a long time. This study investigates present inspection of charge and maintenance. We experiment about some examples of actual bridges with a crack. We report second these researches on Chikumagawa-river Basin., application/pdf}, pages = {41--48}, title = {千曲川流域における補修を必要とする橋梁点検調査2}, volume = {38}, year = {2004} }