I'm not sure if they've broken a champagne bottle over the trail yet, but in my opinion the Arkansas River Trail below the 4th Street bridge is officially OPEN! The trail is now completely paved. There is still work being done on the parking lot and trail-head area, and the bouldering and lighting structures still have a ways to go, but you can now ride on smooth pavement between Main Street and City Park. There is also a really nice pavement and rock seating area at the first hole of the kayak park. Enjoy!