Jun 15

48 Avenue Bridge Update

Posted on June 15, 2018 at 9:00 AM by Ashton Ford

Since the last update, lots of activity has happened at the bridge project. Currently, PSA is working hard to install the new concrete foundations that will be used to relocate the existing signal lights at 53rd Street. As the concrete is being poured, Shelby Engineering is on site along with AMEC to test the concrete, assuring it meets the standards of safety expected by the City. The relocated signal lights will be slightly north of their previous locations, and will allow the construction of the new westbound lane on the north side of 48th Avenue.

On the east side of the bridge, the back wall has been completed, and the road space behind it is being built up to its new elevation. Similarly, progress has been made on the retaining wall adjacent to the Wild Rose Co-op. In a few weeks, once the retaining wall is complete, that team will move to the west side of the bridge to finish the second backwall.

Many may have noticed the large amount of earth being moved around on site. Much of PSA’s team is working hard to clear areas on site, making room for the delivery of the bridge girders. The girders are expected to be delivered in the middle of next week (around June 19th) from the off-site location where they were fabricated near Blackfalds. Once installed, the girders will span the length of the entire bridge, and will serve as the foundation for the roadway across the lake to be built on top of. In total, there will be 30 individual girders delivered.

The City would again 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 engineer@camrose.ca.

June 5 – PSA starting excavation of trench along north side of 48 Avenue (east of pedestrian underpass) for the planned installation of a new retaining wall. Because of the higher elevation of the roadway and sidewalk, it is necessary to install a retaining wall to ensure that the sidewalk and roadway do not fall into the nearby Wild Rose Co-op staff parking lot. The City would like to thank the Wild Rose Co-op staff for temporarily parking elsewhere while this retaining wall is being installed.

June 7 – PSA starting to form the foundations for the retaining wall.

June 14 – This picture was taken standing on the west side of Mirror Lake, looking north-east. Here, you can see both the completed east backwall (background) and the west backwall in progress (foreground), as well as the start to the increase in elevation of the eastern section of the roadway.

June 14 – PSA delivering new material to build up the roadway on the east side of the project.

June 14 – The concrete sub-contractor pouring the new foundation for the relocation of one of the signal lights at 53rd Street.

June 14 – PSA installing the retaining wall adjacent to the Wild Rose Co-op staff parking lot.

June 14 – The pedestrian underpass as PSA begins to build up the road base overtop of it.
Jun 04

48th Avenue Bridge Replacement Update

Posted on June 4, 2018 at 9:25 AM by Ashton Ford

On May 31st another on site meeting was held between the City, AMEC Foster Wheeler, and PSA. At this meeting, PSA gave an update of their progress.

The City and PSA are both happy with how things are proceeding in regards to safety and environmental considerations. With the rainfall in the past week, steps have been taken to manage the flow of water away from the site to keep the area as safe and efficient as possible for workers. Similarly, they are continuing to monitor water runoff to ensure the water quality within Mirror Lake and Camrose Creek is not affected.
Both PSA and AMEC were reminded of the upcoming Jaywalkers Jamboree event and the expected increase to vehicle and pedestrian within the City as a result. PSA confirmed that there should be no conflicts between the project and Jaywalkers.

In the previous two weeks, many events have been happening on site. The installation of the box culverts has been completed, and the pile cap has been installed on the west side of the new bridge. Along with this installation, work is now being done to construct the back wall for the west side, and will take about two weeks to complete. Once the back walls are finished, the bridge girders that were constructed earlier in the year at a factory near Red Deer can be installed on the abutments and pile caps. This is scheduled to begin in early, July. While the current work is being done, the beginning stages of utilities installation on the east side, and preparations for the new retaining-wall adjacent from the Wild Rose Co-op staff parking lot are both being focused on as well. The construction of the retaining wall will begin in about two weeks and should take about a month to complete.

Along with this long list of tasks being completed, PSA plans to start work on relocating the traffic signals at the intersection of 48 Avenue and 53 Street within the next week. The existing signal poles will eventually be placed on new bases that are north of the existing locations. This work is needed in order to construct the new westbound lane on the north side of 48 Avenue. While this signal work is happening, the City and PSA do not anticipate any further traffic restrictions at this intersection. However, the signals will need to be turned off while they are being relocated. Even once these lights are relocated, they will likely remain dark until near the end of the project.

The City would again, 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 engineer@camrose.ca.

May 28 – PSA installing a waterproofing seal along each joint of the pedestrian underpass to ensure that moisture does not enter the underpass from under the roadway.

May 29 – PSA compacting material across 48 Avenue on the east side of the new pedestrian underpass.

May 31 - Looking through the installed pedestrian underpass. Lighting within the underpass will be installed as part of this project in July.

May 31 – As part of the project, PSA was required to install additional catchbasins along 48 Avenue to improve drainage and to reduce the amount of water that flows across the new bridge. This new catchbasin was installed on the north side of 48 Avenue, just east of the pedestrian underpass. Note that the roadway will be raised up by approximately one metre at this location to match the elevation of the new catchbasin.
May 25

48th Avenue Pedestrian Underpass Update

Posted on May 25, 2018 at 8:22 AM by Melissa Henderson

As you may have noticed, there has been a lot of activity this week. PSA began the excavation across 48 Ave on Tuesday May 22. This was to prepare for the installation of the pedestrian walkway underneath the new road. Wednesday morning (May 23rd) began with the delivery of the first box culvert pieces.

The box culvert installation took place for the rest of the day, and by the end of the day on May 23rd, PSA had installed 13 of the box culverts. As of this morning (May 25th), 17 pieces in total have been installed and an additional 5 pieces have been delivered to the site. In the end, the pedestrian walkway will be made up of 32 of these box culverts. To install all of the pieces, PSA predicts that it would take about three days in total. These three days may not be consecutive, as work will first be done with the back filling and weatherproofing of the current sections. Once this first portion is complete, a ramp will be installed over the box culverts so work can be continued on the east side of the bridge.

By the end of the project, PSA will install handrails along either end of the pedestrian underpass to ensure that trail users along 48 Ave do not accidentally fall down onto the lower trails.

Inside the box culverts, they are about 4 meters wide and 2.5 meters in height. This is over 8 feet of vertical clearance, which is the height of a typical house ceiling. The high clearance is to accommodate bike riders, as to not need to crouch down inside the tunnel. The 4 meter wide path is about one meter wider than the average trail in Camrose. This extra width is to allow for pedestrians to comfortably pass each other.

The slanted ends of the underpass are designed to let in as much natural light as possible into the walkway. Additionally, there will be a total of 16 LED lights installed, with 8 on either edge along its length.

The City would again, 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 engineer@camrose.ca.

excavation for pedestrian underpass
May 22 – PSA has started excavation across 48 Ave for the future pedestrian underpass.

box culvert delivery
May 23 – Delivery of concrete box culverts to site.

installation of first 2 pieces
May 23 – Installation of the first two concrete pieces at the north end of the pedestrian underpass. Note that the contractor is using a winch system to ensure that the concrete pieces are installed snugly together.

moving the rectangular piece
May 23 – PSA moving the first rectangular piece of the pedestrian underpass into place.

Installation of 9 box culvert pieces
May 23 (near the end of the day) – PSA has completed installation of the first 9 rectangular box pieces, in addition to the end pieces on the north end of the structure. PSA to continue excavation of soil material and the installation of the box culvert pieces in the days to follow.