The Port of Cleveland requested that a comprehensive topside and underwater inspection be performed on the retaining works along the navigational channel in the Cuyahoga River. This inspection is performed every five years to assess existing conditions on a parcel-by-parcel basis, maintain accurate records of parcel owners retaining works reinvestments, and monitor overall risks to the maritime commerce and navigational channel.

Documentation of the underwater assets was performed by utilizing multibeam sonar. The multibeam data was collected on 187 parcels, covering approximately 14 miles worth of shoreline and retaining structures. The data for each parcel was post-processed and presented as a 3D point cloud, the were then reviewed to determine the presence of structural damage, scour, erosion, and potential obstructions, along with georeferenced images of each structure above the waterline. The data was uploaded to ArcGIS along with pertinent photographs and overviews for review by the Owner.

AMI utilized its team of Hydrographic surveyors to collect multibeam data utilizing state-of-the-art -art equipment. Using HYPACK, AMI post-processed the data to produce 3D point clouds of each parcel. AMI captured georeferenced images of each parcel, above the waterline, to be used in conjunction with the 3D point clouds for assessing the condition of each structure.AMI provided general inspections to determine the condition of the steel hull before it entered dry dock and specified marine coating systems to preserve the vessel and hull for another 30 years of environmental conditions. Once the vessel was towed to dry dock, AMI performed detailed inspections to confirm the final scope of work critical to the vessel’s needs, while being conscientious of costs to ensure the repairs stayed within the DECC’s grant and overall repair budget. AMI provided complete repair oversight, including all repair and coating installations and specialty inspections. Once completed, AMI provided overall project management and oversight to ensure the Irvin was returned to the Minnesota Slip for the next tourist season.