Abstract
Steel bridges and reinforced concrete bridges, introduced from Europe and America, have got wide spread use in modem China. However, arch stone bridges are still being constructed due to their cheap cost of material. Much technical progress has been made during the past several decades. In 1972 and 1990, the world record on the length ot span was changed twice. Moreover the relative of arch stone bridge, two-way curved arch bridge with new structure system, was invented in 1960's. This study aims at clarifying the developmental history of arch stone bridges and two-way curved arch bridges in modem China.
