CEDAR RAPIDS, IA – Construction is scheduled to begin early to mid-March on the 16th Avenue SE floodgate. The 16th Avenue Bridge will be closed during construction to vehicular, pedestrian, and cyclist traffic until approximately fall 2020. During construction, trail traffic will be detoured onto the 12th Avenue Bridge. In addition to the installation of the gate, the surrounding pavement will be reconstructed to support pedestrian access and trail connectivity.
The 16th Avenue SE floodgate rolls across the road, closes, and locks into place in approximately 45 minutes, protecting the community and neighborhood to the 2008 flood volume. The gate will be approximately 14 feet high and approximately 67 feet long, weighing approximately 61,200 pounds. The gate can be pulled into place by a portable winch, or pushed into place by a small piece of construction equipment (i.e. bobcat loader). The project is anticipated to be completed in fall 2020, and is estimated to cost approximately $2.4 million. Construction of the 16th Avenue floodgate marks the first Cedar Rapids flood project funded by the U.S. Army Corps of Engineers. The City recently celebrated a groundbreaking for the project on October 8, 2019. A similar gate is planned for the west side of the bridge in 2022.
2020 Flood Projects
Additional flood control projects slated to begin in 2020 include:
- Levee at the Lot 44 parking lot: Scheduled to begin May 2020, the levee will stretch from approximately 9th Avenue to 12th Avenue. Parking restrictions will be in place during construction.
- Amphitheatre restroom: Scheduled to begin May 2020, the facility includes a built-in floodwall to the 2008 flood volume, and includes storage for events.
- Removable (stackable) floodgate at 3rd Avenue SE: Tentatively scheduled to begin September 2020, the gate protects to the 2008 flood volume and will be closed when river elevations reach approximately 22 feet.
- Two projects to add additional pumping capacity at the already operational pump stations at Lot 44 and Sinclair.
A full list of flood protection measures undertaken since 2008 can be found on the City’s website: www.cityofcr.com/floodcontrol.