Construction of the William Halton Cast-in-Place Segmental Bridge
Abstract:
Two new twin segmental bridges over Sixteen Mile Creek within the Halton Region of Ontario, Canada are being constructed as part of the William Halton Parkway extension project.
These bridges employing a movable form traveler system for a cast-in-place segmental construction technique. Once completed, the bridges will span 280 meters over three spans and each host two lanes and pedestrian walkways, providing vital connectivity between Third Line and Neyagawa Boulevard for the growing Halton Region.
Due to site restrictions for the pier, the two bridges do not have the usual balanced cantilevers between the three spans. Instead, one side of the West pier cantilever is extended, or unbalanced, by 8 segment lengths which led to the addition of a temporary stay tower and deck-level external cable anchoring system for the cantilever during construction.
This presentation will focus on the construction means and methods by BOT Construction Group as well as COWI’s construction modifications and temporary work designs which supported BOT in the construction of these bridges within the strict project site and weather conditions.
Presenter: Jerry Pfuntner, Technical Director
