At present, the prefabricated parts tend to be the whole prefabricated parts in domestic port bridge prefabrication yard, and the prefabricated parts show diversified characteristics such as oversized, ultra-high and overweight, which puts forward higher requirements for the transportation of prefabricated parts. According to the structural characteristics of the prefabricated cap of Hong Kong-Zhuhai-Macao Bridge CB04 standard, the transportation scheme of the project is further studied.