Hurontario LRT progress – Why widening a bridge across a major Toronto-area highway must start with a strong foundation

Work continues on the Hurontario light rail transit (LRT) project that will bring 18-kilometres of new rapid transit to Mississauga and Brampton. When it’s done, the project will head north up Hurontario towards Brampton, passing over the busy Highway 407 in the process. In order to make it all work, construction crews need to make some room. Read on to find out how this works and here’s a hint: it involves a lot of concrete.

Supporting cars, trucks and light rail vehicles is a heavy job.

That’s why the first step to building a strong bridge is building an even stronger foundation.   

In preparation for the Hurontario LRT, construction crews have started laying the ground work for expanding the Highway 407 overpass at Hurontario Street.

When it’s done, the expansion will widen the overpass by two additional lanes and will ensure traffic flows smoothly across the Highway 407 bridge.

Right now, crews are working on the initial steps involved in this expansion by constructing the columns. They are using six metre tall columns that will support the widening of the overpass when crews begin major construction next year.

Want to see exactly how much work goes into widening a bridge over a major Toronto-area high? Check out this video to find out:  

Story by Erika D’Urbano, Metrolinx communications senior advisor