Webinar: Commercial Street Bridge
Commercial St. Bridge replacement (1 PDU)
This session will explain the design and construction of the Commercial St. Bridge replacement: an innovative arched delta frame slid in to replace a busy interstate bridge. The webinar will address the challenges of interstate bridge replacement, and decision process for selecting an accelerated slide-in bridge replacement. It will also describe the design and construction challenges to success with this innovative replacement method, to minimize traffic disruptions.
Project Background (10 minutes)
- Existing Bridge & Historic Status
- Historic Bridge Rehabilitation Assessment
Replacement Bridge (15 minutes)
- Alternatives Analysis for Replacement Structure
- Bridge Replacement Methods
- Selected Alternative – Global Design
- Selected Alternative – Detailed Design
- Construction Sequence Animation
Construction To Date (25 minutes)
- Substructure Construction
- MPT and Innovative Zipper Barrier
- Steel Erection
- Lessons Learned
- Deck Placement
- Installation of Skid System
- Next Steps
Q&A (10 minutes)
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Presenters:
Mike Szurley, Civil Engineer Manager, PennDOT
Nick Burdette, Vice President and Senior Bridge Engineer, HDR
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