A comparison of some aspect of Japanese and the Papua New Guinea (PNG) method for determining seismic loading on Bridges was done. The areas looked at include a review of the history of the development of the Japanese Seismic Code based on lessons learned from the past large earthquakes including the 1923, Great Kanto Earthquake, the 1964 Niigata Earthquake, the 1978 Miyagi-ken Oki, the 1995 Hyogo-ken Nanbu Earthquake and the 2011 Great East Japan Earthquake. The study also involved comparing the standard acceleration response spectra for both countries based on the 1985 PNG Code and the 1996, 2002 and 2012 version of the Japanese code and the evaluation of an existing Bridge Pier in PNG using the Japanese Method. A very brief comparison was also done on seismic restrainers used in Bridges in PNG and the reinforcement detailing near the plastic hinge zone of the circular column used in the bridge pier and the section details was also compared with the detailing arrangement as specified in the English version of the 2002 Japanese Design Specification of Highway Bridges Part V. Seismic Design. The findings which include (1) basic standard acceleration spectrum for seismic design in PNG was only suitable for normal earthquakes whilst the Japan Code allows for both normal earthquakes as well as larger scale earthquakes (2) difference in steel reinforcement arrangements for circular sections (3) termination of starter reinforcement bars for the pier columns in the bridge evaluated being located in the plastic hinge zone (4) sufficient strength, displacement and ductility capacity in the bridge pier designed according to PNG code were then presented in the report.