Abstract Manager

Calgary’s growing population led the Government of Alberta and the City of Calgary to begin planning for the Calgary Ring Road (Stoney/Tsuut’ina Trail) in the 1970's to improve community access to Calgary's roadway network. The recent opening of the last section of the Ring Road creates a 101km-long free-flow circuit around Calgary that reduces traffic congestion and improves commuter access to major road arteries to and from greater Calgary communities. The Ring Road includes the completion of the northwest section which includes the twinning of the original 1998 Stoney Trail bridge over the Bow River.

This session will discuss the project to twin the Bow River bridge which involves road and bridge components, and the construction of a new a new five-span river crossing, a 470m-long bridge over the Bow River, directly west of the existing Stoney Trail bridge. The new bridge was segmentally cast-in-place using a balanced cantilever method - meaning the superstructure was built out from each of the piers and abutments in six separate sections and joined together at completion.

Other aspects of the project include a single lane interchange bridge at Tuscan/Scenic Acres, associated collector-distributor roadway, and adding a lane to existing SB mainline to increase capacity.  This work was to connect the newly twinned Bow River Bridge to existing sections of Stoney Trail to the north of Crowchild Trail with 3 lanes Southbound.