above water level
an important part of the transportation system
The bridge is an important link in the city transportation system, carrying two traffic lanes northbound into downtown from Gateway Boulevard and 109 Street via Queen Elizabeth Park Road, and Walterdale Hill Road. The existing three-span structural steel truss bridge currently carries two lanes of northbound traffic, along with pedestrians and cyclists on sidewalks on both sides, and a number of utilities across the river. Besides, It is approaching 100 years of age at the end of its useful life. It serves 33,000 vehicles rumble across it daily.
It is important to replace the bridge because it does not have the structural capacity to carry trucks with legal loads and many of the structural steel members of the bridge superstructure are severely corroded. Besides, the new bridge will ease the congestion of Walterdale Hill Road and Queen Elizabeth Park Road during morning rush hour.
The new Walterdale Bridge will offer improved the access to markets and the creation of nearly 400 direct and indirect jobs in 2014.
The bridge over the North Saskatchewan River, with a span of 230 meters between abutment axes, is a double metal arch bridge sloping inwards, from which hangs a 22.40 meter wide deck formed by three lanes for vehicles and a pedestrian walkway on the east side. In addition, the arch will support a footbridge for shared use by pedestrians and cyclists on the west side which is separated from the deck of the bridge by a variable distance ranging from 8.00 to 2.00 meters.
The double arch rises 43 meters above the deck and 55 meters above the river water level. The arches are joined by metal ribs of variable diameter that range from 2.50 meters at the base of the double arch to 1.40 meters at the keystone.
The arc design of the new bridge not only favours the aesthetics of the structure, but also eliminates the need for piers in the riverbed, which facilitates the movement of ice in the river.
- Location: Edmonton, Alberta, Canada
- Contract type: Design and construction
- Infrastructure: Replacement of the Walterdale Bridge, 230 m long and 40 m high, access roads, bike lanes
- Year of project completion: 2016