Artist Jim Brenner is installing a light sculpture on the Custer Street bridge over the CTA Yellow Line tracks.

The work, Brenner says, uses light to give the illusion of motion at night. Vertical plates of steel will function as louvers in a window shade, creating a sense of cadence as people pass the sculpture.

A blue line of LED light will appear to rise and fall as one goes by.

It’s designed to make the artwork interesting both for pedestrians and for riders in a moving car.

The sculpture will serve as a gateway for people crossing the bridge to enter or leave the south Evanston community.

The date for a dedication event for the piece hasn’t yet been set.

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