Kentucky Lake Bridges--Steel from Beginning to End [B20]

The Lake Bridges Project addresses the long-term transportation needs in the Lake Barkley and Kentucky Lake region. The bridge type selection process concluded July 14, 2009 with the selection of a Basket-Handle Tied Arch, for Kentucky Lake and Lake Barkley. The selection took into account public input, cost and engineering feasibility. This session will focus on the design process and rationale for the selection of various features of the bridge superstructure such as the selection of the network hanger arrangement, integral floor system, an open H-section rib, a non-welded knuckle plate connection and seismic isolation system. Because these structures will serve as a main route for evacuations and first responders, they were designated "essential" for seismic design. This session will also look at the seismic design of the Kentucky Lake and Lake Barkley Approach Spans.

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