On July 16, 1990, a magnitude 7.7 earthquake struck northern Luzon, causing liquefaction, which made buildings tilt and sink due to their heavy weight and the looseness of the ground, which turned into sediment-rich mud. The Magsaysay Bridge, one of the two bridges especially spanning the Pantal River, collapsed, delaying people from crossing to the other banks and vice versa. Major damage caused businesses to be permanently transferred to the neighbouring towns of Mangaldan and Calasiao, but somehow, Dagupan and its inhabitants managed to recover from the earthquake.