The Old Lanshi Bridge was situated on the former G325 National Highway in Foshan City. The bridge spanned the busy Dongping Waterway, in a densely populated area, presenting a challenging blasting environment. This A-grade demolition project involved drilling over 5,000 blastholes and consuming 456 kilograms of explosives. Upon detonation, the old bridge collapsed in sections, with the adjacent new bridge remaining completely undamaged