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May 08

48th Avenue Bridge Replacement Update

Posted on May 8, 2018 at 11:58 AM by Melissa Henderson

May 8, 2018

On May 3, 2018 representatives from the City, PSA Construction, and AMEC Foster Wheeler met for an on-site meeting for the 48th Avenue Bridge Project. At this meeting, PSA updated the City on the work that has been completed on the bridge.

To date, all the pilings to support the new bridge structure have been installed on both the East and West side of the new bridge. PSA has also completed the installation of the pile cap on the east side of the new bridge. This pile cap sits on top of the abutment pilings, and will ultimately support the east side of the concrete bridge girders.

PSA also informed the City that the fabrication for the concrete bridge girders and the box culverts is now complete. The box culverts will be delivered to the site by mid- to late May, and the bridge girders will be delivered to the site in June. Subsequent to their delivery, the box culvert and girder installations will begin. Over the next few weeks, PSA will continue to work on the bridge abutments.

Over the past couple of weeks, the PSA crews have been hard at work removing loose organic material from the lake to allow for large rocks (called rip rap) to be installed to prevent erosion. However, due to the heavy spring runoff, progress on this stage of the project is going slower than expected. At this time, PSA anticipates that the project completion date may move into early September, rather than being finished at the end of August as originally planned. PSA is planning to make up for some of this lost time, including mobilizing additional equipment into the area to allow the work to progress faster.

This site meeting also included a discussion on the current traffic accommodation plan. Currently, the detour routes appear to be working quite well, and the City does not anticipate any major changes to the plan at this time.

The City would like to thank citizens for their patience and cooperation during this project. If you have any questions or concerns, please contact the Engineering Department at 780-672-4428 or at

2018-04-19 installation of pile cap
April 19 – PSA installs a section of the East pile cap on top of the pilings. The pile cap will support the concrete bridge girders and roadway. The West pile cap will be installed in late May or early June.

2018-05-02 PSA removing demolished bridge
May 2 – Demolished sections of the former 48th Avenue bridge are removed by PSA construction. These sections will be delivered to the City’s concrete recycling site where they will be crushed and reused on future projects.

2018-05-03 lego blocks
May 3 – PSA temporarily installing concrete “Lego blocks” within the channel of the new bridge. Once these were installed, the area between the Lego blocks and the East abutment was dewatered in preparation for the installation of the steel backwall pieces. The backwall will be installed on the outside of the abutment pilings and will prevent soil and the new roadway from falling into the lake.

2018-05-03 steel backwall
May 3 – Sections of the steel backwall, which will be installed shortly.