Mill Creek B278 Bridge Replacement and Trail Upgrades
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Mill Creek Pedestrian Bridge (B278) will undergo construction to replace the existing bridge in 2022. The approach trails on either side of the bridge will also be upgraded.
Pedestrian bridge B278 located within Mill Creek Ravine North will undergo replacement. Construction is anticipated to begin summer 2022. The approach trails on either side of the bridge will be upgraded to match the elevation of the replacement bridge.
About the Project
The Mill Creek B278 Bridge Replacement and Approach Trail Upgrades project aims to replace the bridge following recommendations made after the bridge condition was assessed in 2020
The replacement is expected to take approximately one construction season starting in summer 2022
It is anticipated that the bridge and approach trails will not remain open during construction
Impact to the naturalized area that surrounds the bridge and trail will be mitigated
Bridge B278 is a two-span riveted mixed materials structure that carries trail users over the Mill Creek Ravine between neighborhoods of Strathcona and Bonnie Doon.
The location of this bridge in Mill Creek Ravine regularly experiences flooding during seasonal thaw cycles and after high intensity rainfall. The purpose of this project is to allow for trail connectivity through this corridor and to ensure safety for trail users year round.
A routine bridge condition assessment revealed evidence of wood rot and foundation failure on the existing bridge structure. It has been determined that maintenance work can’t extend the useful life of the bridge and the bridge must be replaced to ensure the safety of trail users.
Mill Creek Pedestrian Bridge (B278) is located a short distance upstream of the Mill Creek EPCOR intake to the North Saskatchewan River. This bridge regularly experiences flooding and debris build-up during seasonal thaw cycles and after high-intensity rainfalls.
Some trees and shrubs will need to be removed to accommodate construction. However, the replacement bridge is aligned with the pre-existing bridge and the trail, which will allow for impact to be kept at a minimum.
A site restoration plan has been developed to restore the area after construction to the same or better condition.
Our bridges are inspected routinely and undergo condition assessments on a regular basis. These assessments determine the condition of the bridge and its components and influence whether a bridge should be rehabilitated or replaced. Determining factors are based on age, estimated useful life, condition, and estimated replacement value.
The lifecycle management team makes choices that will maximize the lifespan of the current infrastructure.