Image shows a large section of bridge being moved into place.

Demolition derby – Watch old Highway 400 bridge get dismantled in new video

Construction on the Finch West LRT continues to move forward. Part of that project included a recent bridge replacement over the Highway 400 near Finch Avenue. Once the new bridge was installed, the old bridge pieces were left behind. Watch the new video where the massive spans are reduced to dust.

Out with the old, literally.

In June, Finch West Light Rail Transit project constructor, Mosaic Transit Group, removed and replaced the Highway 400 bridge.

Using the rapid bridge replacement method, the team was able to complete the work over two weekends. While the new bridge structures are busy supporting traffic, the old bridge spans sit off to the side, awaiting their fate.

The old bridge spans were demolished shortly after, leaving lots of rebar and concrete behind.

It took just under two weeks to demolish the structure. The concrete and steel materials left over after demolition on the structure are separated for recycling or reuse.

What isn’t reusable is crushed into gravel and processed as backfill or road base material. Reusing concrete material is more environmentally friendly than disposing it in landfill.

Watch as the process unfolds in the latest video:

Story by: Erika D’Urbano, Metrolinx communications senior advisor