The Cedar Rapids Parks Department has announced that the Cedar Valley Nature Trail is currently closed between the Tait Cummins trailhead and the A Street trailhead (near the Linn County Solid Waste facility), for a section of pavement repairs. A detour has been established on C Street SW. An update on the timeline will be released once a schedule for repairs is finalized.  A map of the affected section of trail, and a proposed detour:

Also find some pictures of the pavement damage that is being repaired: