Why are the walls along a stretch of Highway 20 turning blue?

A work of art is taking shape along a stretch of Highway 20 from the airport to the 1st avenue overpass in Lachine.

Local artist Alain Paiement will spend the next few weeks finalizing a piece called Bleu de Bleu. It'll be complete by Sept. 8, but for the moment, some of the walls along the highway are painted blue — mitigating the severity of some of the cracks in the concrete in the process.

The idea, he says, is to create a wave of blue a long a lengthy stretch of the highway. Once it's finished, it will incorporate blue LED lighting to light the way to and from the airport at night.

"One blue line that will vary, that will undulate, along the way," is how Paiement describes his work of art, "and one blue line that will dialogue with anything that you might meet along that way."

The blue will continue over a six-kilometre stretch of the highway, and will be maintained for the next three to five years.

The $3.2 million dollar project is being funded entirely with private money — mainly by the National Bank — and is technically part of Montreal's 375th birthday celebrations.

-CJAD 800's Emily Campbell contributed to this report.