Technical specification for variable stiffness bearings of highway beam bridge Technical Specification for Foundation Piles Testing of Highway Engineering Technical specification for maintenance of sea-crossing highway bridges Technical specifications for geological driling of highway engineering Technical specifications for geological mapping of highway engineering Technical specifications for field inspection of existing highway bridges Technical specifications for strengthening of highway tunnel Technical specification for moving engineering of buildings Technical specification for post-grouting of cast-in-place pile of highway bridges Technical specification for corrugated steel-concrete composite bridge deck of highway bridge