Linn County Conservation has reported in their most recent email newsletter that the majority of the Cedar Valley Nature Trail and Grant Wood Trails are passable.
The Hoover Trail (continues path of the CVNT at 76th Ave. Dr. SW) remains closed until the heavy equipment is freed up from other clean-up efforts. The paving along Ely Rd does have a paved shoulder, but caution should be used if riding around the closure with traffic.
Map of Hoover trail closure area:
The Cedar Lake Loop trail has also been reported to be passable, as well as the CEMAR trail segment in Cedar Rapids. The section of the CEMAR through Daniels Park has not been cleared, but the the CEMAR from to 16th St. NE to 29th St. NE appears clear.