The Alex Fraser Bridge Capacity Improvements Project, located on Hwy 91 in Delta, B.C., involved stripping, excavation, pre-loading and road construction works, and the installation of the storm drainage. This project consisted of capacity improvements on the existing bridge, including widening of Highway 91 north and south of the bridge and adding a seventh lane to the bridge itself.
Traffic and winter weather conditions in Vancouver created several challenges. Multiple utility crossings on Highway 91 on the south side of the bridge were installed by open cut, requiring the staging of construction and the use of temporary retaining walls to support the traffic.
All of the storm system and import materials required traffic lane closures and were performed at night during allowable hours. Due to the multiple parties taking part, a strong project coordination team was assigned to the project to alleviate any challenges.
15,000 m3 of stripping and Type D excavation to fill or disposal.
Supply and installation of 18,000 m3 of 25 mm road base.
Installation of approximately 600 Lm of CB leads and culverts, including 48 Lm of 1,500 mm CSP across Hwy 91.
Infilling and abandoning existing culverts, utilizing Fillcrete cement product.