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Project Spotlight: Stage 2 crews preparing to demolish Highway Montreal Road Bridges

Stage 2 crews preparing to demolish Highway Montreal Road Bridges

Over the past year, residents in Ottawa’s east end have seen a great deal of transformation between Blair Road and Trim Road as part of the Stage 2 LRT O-Train East Extension.

The main objective in 2020 has been relocating infrastructure in the Highway 174 corridor to set the stage for track and station construction in the median. Crews have been busy relocating highway lanes and access ramps. Early relocation efforts have allowed for construction to begin on permanent structures. Columns are being built at the East Flyover and two new bridges have been constructed at the Highway 174 Montreal Road interchange following the relocation of seven highway ramps.

This year’s grand finale will take place at the Highway 174 Montreal Road interchange when crews demolish two bridges to make way for the future Montreal Station.

Aerial view of Highway 174 widening at Montreal Road Interchange.
Aerial view of Highway 174 widening at Montreal Road Interchange.

How will the bridges be demolished?

Bridge demolition does not include a wrecking ball, or dynamite and a charger that Wile E. Coyote might have considered if he were responsible for the demolition, but rather a strategic approach to safely dismantle the old bridges over the course of a weekend.

The first step of bridge demolition will be closing off access to pedestrians, cyclists and motorists by securing the area with fencing. Montreal Road will be completely closed beneath Highway 174 for a full weekend, from Friday December 4 at 8:00 PM until Monday December 7 at 5:00 AM. This includes the two vehicular lanes in each direction, pathways, and transit service under the bridge.

There will be lots of signage in the area advising the public of the closure and where to detour to get from one side of the bridge to the other. A shuttle service, operating every 5 minutes, will provide a pedestrian connection from one side of Montreal Road to the other. Considering the anticipated travel times, average travel times will be increased by approximately 10 minutes.

Once the site has been safely secured, demolition will begin on the two bridge decks in the middle, working outwards towards the edge. Construction machinery on top of the bridge will chip away at the top of the deck. Once the deck has been removed, the skeleton of the old bridge (steel girders and beams) will be taken down by excavators with hydraulic shears. To complete the works, the centre piers will also be removed.

Once the road below has been cleaned of any debris, fencing and barriers are removed, lines are repainted and Montreal Road is reinstated for public use.

Facts

  • 1,456 m3 of concrete to be demolished
  • 160 metric tonnes of steel to be removed
  • Various pieces of large construction equipment fitted with hydraulic hammers, buckets, forks and shears.
  • 2 water trucks will also be on-site for dust control.

Montreal Road Station

The platform of Montreal Road Station will be in the median of Highway 174, above Montreal Road where the bridges that were demolished were located. The platform spans above Montreal Road with bus stops located on both sides of Montreal Road beneath the station.

This image is an artistic representation of the Montreal Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Montreal Station design. The final product may not be exactly as shown.

Questions or comments

Was this information helpful? Let us know by emailing Stage2@ottawa.ca.

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