05/29/2026
Join us to learn about Polish-born civil engineer Ralph Modjeski (1861-1940) who became “America’s greatest bridge builder.” Modjeski furthered the use of suspension bridges and oversaw the design and construction of nearly forty bridges over the course of his career. Among his achievements was the Benjamin Franklin Bridge over the Delaware River which, upon completion in 1926, was the longest suspension bridge in the world. The Modjeski and Masters engineering firm , based in Philadelphia, is still in operation.
🗓️ Wednesday, June 17
🕰️ 6:00pm
📍The Athenæum
🎟️ Open to all. Register in advance.
🥂 Light refreshments following the talk
Presented in partnership with the Consular Corps Association of Philadelphia.
ABOUT THE BENJAMIN FRANKLIN BRIDGE
Construction of the Benjamin Franklin Bridge – originally named the Delaware River Bridge – began in 1922 and opened on July 1,1926. The total cost of construction was more than $37 million which would amount to over $700 million today. Approximately 1,300 people worked on the bridge and were led by Ralph Modjeski, the engineer and Paul Philippe Cret, the architect. Mounted near the entrance to the pedestrian walkway (5th and Race Streets), there is a memorial plaque dedicated to 15 workers who died by construction-related incidents. Following the bridge’s opening, the main Philadelphia-Camden ferry service, a 264-year transportation link, effectively ceased operations on March 31.
This year will be 100th anniversary since the bridge opened. To commemorate this event, the bridge will be closed to traffic on July 11, 2026 and the Delaware River Port Authority will be hosting a free public celebration with live music, food trucks, rides, and family-friendly activities.
🗓️ Saturday, July 11
🕰️ 10:00am-2:30pm (rain or shine)
📍Benjamin Franklin Bridge
🎟️ FREE
Images from our Cret Collection, Lutz Collection, and Jacob Stelman Collection.
New York Times Archives: Ralph Modjeski Obituary, Ferry Closure Article