Technical specifications for construction of highway bridges and culverts General specifications for design of highway bridges and culverts Technical specifications for construction of highway gas tunnel Technical specification for construction of highway safety facilities Technical specifications for construction of highway tunnel Technical Specifications for Construction of Highway Cement Concrete Pavements Technical specifications for application of pebble concrete to highway bridges and culverts Technical Specification for Construction of Highway Cement Concrete Pavements 并列题名：Technical specifications for construction of highway tunnel Specifications for design of foundation of highway bridges and culverts