Puente Las Cucharas, Railway bridge in Viña del Mar, Chile.

Puente Las Cucharas is a steel railway bridge of the Metro Valparaíso crossing the Marga Marga estuary on the boundary between Viña del Mar and Quilpué. Its ironwork was supplied by the French firm Schneider et Cie. Le Creusot, and the structure was built between 1908 and 1913 as a meccano-type assembly.

The first bridge opened in 1856, built under engineer William Lloyd with contractors such as the American William C. Linton, as part of the Ferrocarril de Valparaíso a Santiago. After the 1906 earthquake, a steel bridge was assembled between 1908 and 1913 by the French firm Schneider et Cie. Le Creusot, replacing the old crossing while trains kept using it. The 2010 earthquake damaged one pillar, halting Metro Valparaíso service until the first repairs ended on 19 March 2010.

This structure linked the coastal city with inland towns during a period of rapid growth. The bridge became a symbol of how rail transport shaped the region's development.

You can view the bridge from nearby streets or paths on both sides of the estuary. The best vantage points are from below or along the waterside areas where the full structure is visible.

During construction, trains continued running without interruption while the new bridge was built alongside the existing line. This unusual feat shows the engineering skill required to maintain operations during such a major transition.