23:I[8437,["8500","static/chunks/8500-3953cc33eeceb44e.js","8437","static/chunks/8437-a1bc798bb21cc4d8.js","2480","static/chunks/app/%5Bstate%5D/%5Bcity%5D/%5Bsection%5D/%5Bslug%5D/page-91c1194c5b76e295.js"],"Image"] 24:I[3670,["8500","static/chunks/8500-3953cc33eeceb44e.js","8437","static/chunks/8437-a1bc798bb21cc4d8.js","2480","static/chunks/app/%5Bstate%5D/%5Bcity%5D/%5Bsection%5D/%5Bslug%5D/page-91c1194c5b76e295.js"],"SocialShare"] 26:I[1527,["8500","static/chunks/8500-3953cc33eeceb44e.js","8437","static/chunks/8437-a1bc798bb21cc4d8.js","2480","static/chunks/app/%5Bstate%5D/%5Bcity%5D/%5Bsection%5D/%5Bslug%5D/page-91c1194c5b76e295.js"],"RailSubscribe"] 27:I[2837,["8500","static/chunks/8500-3953cc33eeceb44e.js","8437","static/chunks/8437-a1bc798bb21cc4d8.js","2480","static/chunks/app/%5Bstate%5D/%5Bcity%5D/%5Bsection%5D/%5Bslug%5D/page-91c1194c5b76e295.js"],"BroadstreetAd"] 28:I[7332,["8500","static/chunks/8500-3953cc33eeceb44e.js","8437","static/chunks/8437-a1bc798bb21cc4d8.js","2480","static/chunks/app/%5Bstate%5D/%5Bcity%5D/%5Bsection%5D/%5Bslug%5D/page-91c1194c5b76e295.js"],"EzoicAd"] 25:T40f,

When Tilikum Crossing glows blue and purple, it’s best to put off any plans to swim in the Willamette River. A public art installation, which features 178 decorative LED lights, illuminates the Bridge of the People in a display that changes based on multiple factors.

Water temperature corresponds to the base color, river height aligns with the contrast + current speed determines how fast the hues change. Tides (yes, even this far inland), affect which direction the luminescence moves — coming in, it goes toward the center; when receding, it shifts to the ends of the bridge. So when it looks like this, the water is particularly chilly.