GUANGZHOU, June 19 -- A highway ramp collapsed in south China's Guangdong Province early Friday morning, killing one person and injuring three others.

The accident happened at 3:40 a.m. in Heyuan City when a bridge ruptured with four heavy trucks loaded with porcelain clay on it, according to an investigation.

The highway, opened to traffic in December of 2005, connects Guangdong with east China's Jiangxi Province.