The Chain of Rocks Bridge was constructed in 1929 and quickly became part of historic Route 66. Now, one of the world's longest pedestrian and bicycle bridges, it's also the site of Eagle Days. During the winter, the bald eagles come to feed on the Mississippi River, and form one of the largest concentrations of the birds in North America. The bridge is prime viewing area for the majestic visitors. There will also be a live eagle education program, living history demonstrations featuring Lewis and Clark re-enactors, and the always-popular warming tent activities that include art projects for the kiddos. Check out http://confluencegreenway.org/eagledays.php for more information.