The Walterdale Bridge has served Edmonton for a century and is reaching the end of its service life. A new bridge will replace the old bridge, spanning the North Saskatchewan River to connect the intersection of Queen Elizabeth Park Road and Walterdale Hill on the river's south side to the River Valley Road/Rossdale Road/105 Street intersection on the north side.
The excavations on the northside of the project fill with rain water and site run off. These excavations need to be dewatered to keep the project on schedule. This water has a very high level of TSS from the open excavations. Due to the proximity of the North Saskatchewan River, this water needs to be treated before it is discharged into the river.
The contractor was able to pump the water through a Bazooka to treated the water. The water was discharged over a layer of treated jute directly into the North Saskatchewan River.
The Bazooka and treated jute worked excellent. This allowed the contractor to save time and money as compared to other dewatering options.