This paper also introduced the construction method, construction technic, quality control measure and the construction key of the structure system change of the simple-continuous beam bridge.

In combination with steel box girder construction by incremental launching method, the paper introduced the construction technique of variable depth curved steel continuous box girder.

According to the overpass bridge project of Miaohong Line in Pingdingshan, the construction technology of cast-in-situ concrete continuous box beam is introduced.