Curved Tubular Flange Girders: I-95 Section BR2
STV recently completed the design of the first curved steel tubular flange girder bridge in the United States. The use of a tubular flange in place of a standard plate increases the structural performance while reducing fabrication and erection material, as well as erection time compared to standard plate flange curved girders. Additional several advantages include overall weight savings, minimizing required under clearance, simplifying erection, and eliminating cross frames or diaphragms.
The use of steel plate flanges has been the standard for straight and most curved girder bridge applications. Lehigh University performed research supporting the design of curved steel girder bridges with tubular flanges. PennDOT is constructing this innovation as part of an interchange project on Interstate 95 in District 6. The site constraints for erection are very challenging with overhead utility lines and rail lines below the bridge. Therefore, this type of design is a good fit.
The project is currently under construction by Buckley & Company, Inc. and the TFGs are being fabricated by High Steel Structures in Lancaster, PA, tube steel was provided by Atlas Tube Corp. Steel in Chicago, IL and the tubes were bent by Chicago Metal Rolled Products in Chicago, IL.
- Understand the history and different types of tubular flange girders
- Overview of the project and site conditions that lead to the selection of this girder type
- Design methodology, fabrication challenges, and construction techniques used on the project.
1 CE credit will be issued for this event. CE certificates will be emailed to all attendees within a week after the event.
Cliff Dwellers Club
200 S. Michigan Ave, 22nd Floor
Chicago, IL 60604
This is an in person event with the speaker presenting remotely.
- Caesar Salad tossed with Caesar Dressing topped with Parmesan and Croutons
- Stuffed Chicken Breast with Spinach, Pine Nuts and Sundried Tomato
- Served with chef’s appropriate accompaniments of vegetables and starch
- Chocolate Mousse with berries
Presentation time: 6:00 – 7:00 pm
Cocktail hour: 5 – 6 pm
Member - $60
Non-Member - $90
Member - $30
Non-Member - $45
About the Speaker
Geoffrey N. Stryker, P.E.
Engineering Director/Vice President - STV Incorporated
Geoffrey N. Stryker, PE, is a Vice President and Engineering Director at STV Incorporated with over 20 years of structural engineering and design experience. He currently serves as the Project Delivery Director for Pennsylvania and New Jersey and has been the project manager for the I-95 BRI project since 2012.