中华人民共和国行业标准 公路圬工桥涵设计规范 = Code for design of highway masonry bridges and culverts 中华人民共和国行业标准 公路圬工桥涵设计规范 = Code for design of highway masonry bridges and culverts：eng 中华人民共和国行业标准 公路钢筋混凝土及预应力混凝土桥涵设计规范 = Code for design of highway reinforced concrete and prestressed concrete bridges and culverts 中华人民共和国行业标准 公路钢筋混凝土及预应力混凝土桥涵设计规范 = Code for design of highway reinforced concrete and prestressed concrete bridges and culverts：eng General specifications for design of highway bridges and culverts 中华人民共和国行业标准 公路路基设计规范 = Specifications for design of highway subgrades 中华人民共和国行业标准 公路路基设计规范 = Specifications for design of highway subgrades：eng 中华人民共和国行业标准 公路路基设计规范 = Specifications for design of highways subgrades