Chestnut Street Bridges, PA
AEG, a SOCOTEC Company, provided structural engineering and surveying services for the Chestnut Street Bridges rehabilitation project located in Philadelphia’s University City area. The project was delivered for PennDOT District 6-0 and focused on improving and rehabilitating multiple bridge structures along Chestnut Street and adjacent crossings.
Key Information
Project Name: Chestnut Street Bridges
Client: PennDOT District 6-0
Location: Philadelphia County, Pennsylvania
Services Provided: Structural Engineering, Surveying
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The Challenge
Rehabilitation of a Critical Urban Bridge Corridor
The project involved the rehabilitation of a series of bridges along Chestnut Street, including the Chestnut Street Bridge over the Schuylkill River and adjacent structures between 31st and 23rd Streets in Philadelphia.
The corridor serves as a key multimodal connection for vehicles, pedestrians, and cyclists, and required coordination within a dense urban environment crossing active rail infrastructure and the Schuylkill River. Improvements focused on extending the service life of the structures while enhancing safety and accessibility for all users.
The Solution
Structural Engineering & Surveying Support
AEG, a SOCOTEC Company, provided engineering and survey support across multiple phases of the project, including structural and geotechnical-related field and design activities.
The scope included:
Structural engineering support for rehabilitation design
Surveying services across multiple bridge locations
Development of temporary excavation support systems
Protection system planning for bridge work areas
Design assistance for work near active transportation and rail corridors
A key technical challenge involved a historic arch bridge spanning active CSX rail lines, requiring a custom temporary arch support system to allow safe deck replacement while maintaining structural integrity and uninterrupted rail operations.
Additional engineering work included structural calculations for sidewalk demolition and field surveys supporting construction planning.
AEG, a SOCOTEC Company, provided engineering and survey support across multiple phases of the project, including structural and geotechnical-related field and design activities.
The scope included:
Structural engineering support for rehabilitation design
Surveying services across multiple bridge locations
Development of temporary excavation support systems
Protection system planning for bridge work areas
Design assistance for work near active transportation and rail corridors
A key technical challenge involved a historic arch bridge spanning active CSX rail lines, requiring a custom temporary arch support system to allow safe deck replacement while maintaining structural integrity and uninterrupted rail operations.
Additional engineering work included structural calculations for sidewalk demolition and field surveys supporting construction planning.
The Results
Safe Rehabilitation of a Complex Urban Bridge System
Through coordinated engineering and surveying services, AEG, a SOCOTEC Company, supported the successful rehabilitation planning of the historic Chestnut Street Bridges corridor, ensuring continued functionality of a critical transportation link in Philadelphia.
Key outcomes:
Structural rehabilitation support for multiple bridge structures
Safe design solutions near active rail corridors
Improved long-term reliability of the bridge network
Enhanced multimodal connectivity for the region
