Comparisons of the Load Effect in Highway Specifications Old and New

A comparison is made between the current JTG D60-2004, "General Specification for Highway Bridge and Culvert Design" and CJJ 77-1998, "Load Standard for Urban Bridge Design" and the former JTJ 021-1989, "General Specification for Highway Bridge and Culvert Design" in the form of load and load value, with an analysis of the actual difference in the load effects caused respectively, which provides practical basis for comparison of the said specifications frequently met during reconstruction of old bridges.