the overhead footpath has been torn up for construction and there are no plans to reinstall it afaik since the city is replacing the entire intersection[1][2].  you can see that the overpass is gone on recent satellite images[3]

[1]: https://www.cedar-rapids.org/local_government/departments_g_-_v/public_works/projects/mount_vernon_road_se_roundabout.php
[2]: https://cms8.revize.com/revize/cedarrapids/3012149_301956_PIM_Presentation_FINAL.pdf (pages 26-30)
[3]: https://arcg.is/15eajq