Bridge building method for highway construction

The invention discloses a bridge building method for highway construction, and relates to the technical field of bridge construction, and the bridge building method comprises the following steps: S101, constructing a support foundation, erecting a support, and mounting a bottom web template; s102, steel bars of the expanded bottom web formwork are installed; s103, a corrugated pipe is positioned, concrete is poured, and a top formwork and top wing plate steel bars are installed; s104, secondary concrete pouring and curing are carried out; s105, after the formwork support is disassembled, steel strands are braided and penetrated, and then prestress tensioning and anchor sealing are conducted; according to the technical scheme, a bridge building method is adopted, corresponding settlement observation points are designed in a support of a bridge, a position detection module is matched for use, the problem that the settlement distance judgment of an observer is affected due to the fact that traditional settlement