Armor stone revetment design for shoreline stabilization.

AMI provided permitting and engineering design services for a shoreline stabilization project along Lake Superior in Duluth, Minnesota.

Due to near-record high water elevations, wave action, ice, and recent storm events, the shoreline along Lake Superior had been experiencing increased levels of erosion. AMI developed a shoreline stabilization design consisting of an armor stone revetment along approximately 100 feet of shoreline to help prevent further erosion.

The proposed improvements included a set of rough rock steps integrated into the revetment to provide access to the shoreline. A patio area was identified on the project drawings; however, no engineering services were included for the patio design.

AMI coordinated permitting efforts with the U.S. Army Corps of Engineers and Minnesota Department of Natural Resources and prepared the documentation required for agency review. Following owner review of the preliminary design drawings, AMI prepared final construction documents and submitted the approved design for permitting.

The completed design provided shoreline protection improvements while maintaining shoreline access and supporting the permitting process for future construction.