The author gives importance to a lifeline structure like bridges. Verification of Philippine bridge design seismic performance based on the Japanese Specifications for Highway Bridges is the key factor. Serviceability of a bridge is very important especially after a disaster like earthquake. Serviceability of a bridge must be maintained to give way for an effective rescue operation and bringing of relief goods to the affected area. Maintaining the effectiveness of the bridge after a big earthquake is not only economical and advantageous to the government but also reduces the possibility of human casualties.
Using the January 1995 Kobe Earthquake Ground Motion (Type II-near-fault type earthquake) and March 2011 Tohoku Earthquake Ground Motion (Type I-subduction type earthquake) standard values of the design horizontal seismic coefficient for the level 2 Earthquake Ground Motion in the verifications of the Model bridge in accordance with the Japanese Specifications for Highway Bridges is more appropriate to the model bridge which is located near to an active fault, just like Kobe earthquake.
In this study, the importance of residual displacement is deemed necessary and very important in the serviceability of the bridge. Philippine bridge design is so ductile that even after a very large displacement of the column after input of Kobe and Tohoku earthquake ground motion the bridge is still on safe condition. On the other side bridges with high ductility performance, usually endure residual displacement.