Walnut Lane Memorial Bridge, Concrete bridge in Northwest Philadelphia, United States
The Walnut Lane Memorial Bridge spans 585 feet across Wissahickon Creek, connecting Germantown and Roxborough neighborhoods with a 40-foot wide roadway and concrete sidewalks.
Completed in 1951, this structure marked a milestone in American engineering as the first major prestressed concrete beam bridge constructed in the United States.
The bridge dedication ceremony in 1950 gathered local students, officials, and residents for performances and celebrations, marking its role in community connection.
The bridge construction cost reached $700,000, representing a thirty percent reduction compared to traditional concrete arch designs of the time period.
Belgian engineer Gustave Magnel incorporated four wire cables embedded within concrete girders, introducing European post-tensioning methods to American bridge construction.
Location: Pennsylvania
Inception: January 1951
Official opening: 1951
GPS coordinates: 40.03310,-75.18780
Latest update: March 3, 2025 07:19
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