Philadelphia, PA, United States
Ralph Modjeski (1861-1940). Polish immigrant and civil engineer, Modjeski was one of the most influential figures in American bridge building. He completed the Quebec Bridge on the St. Lawrence River and over 40 others, earning numerous awards. He was chief engineer and designer for the Benjamin Fra
nklin Bridge here, opened in 1926.
Listen to the audio guide for Blue plaque № 29578 Free on WIP — starts by itself when you arrive, even with the screen off