Specifications for collision design of highway bridges Specifications for landscape design of highway bridges Specifications for seismic design of highway tunnels Specifications for design of highway tunnels 并列题名:Specifications for seismic design of highway tunnels Guidelines for seismic design of highway bridges Specifications for design of highway steel bridge 并列题名:Guidelines for seismic design of highway bridges Technical specifications for field inspection of existing highway bridges Interpretations of japan code for seismic design of highway bridges