Calderón Bridge (käldārōnˈ) [key], site of a decisive battle in the Mexican revolution against Spain, fought on the Lerma River E of Guadalajara, Jalisco, Mexico. On Jan. 17, 1811, insurgents commanded by Hidalgo y Costilla met the royalists under Calleja del Rey. On the point of victory, Hildalgo's men were panicked by the explosion of an ammunition wagon. Their flight led to the collapse of the independence movement under Hidalgo.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.