ANWR GIWW Final Design Project

Project Description

This project is a continuation of the CEPRA cycle 12 project #1727 for engineering and design, surveying, and permitting of a shoreline protection structure along the GIWW shoreline of ANWR’s Blackjack Unit. The existing revetment along the shoreline has been damaged, displaced, or erosion has occurred around the revetment and is no longer functioning to protect the shoreline. The entire 12-mile length of the GIWW shoreline within the ANWR was visually inspected, and select areas along the northern shoreline were logged, surveyed, and photographed. Using the data collected, a structural condition indicator for the existing revetment was assigned to sections throughout the entire area. In some damaged sections, the integrity of the revetment structure may be repaired (or modified) using rock rubble. For sections of the revetment structure that have completely failed, a free-standing breakwater may be constructed immediately in front of the existing revetment structure, or rock rubble cover may be used to encapsulate the damaged segment after subgrade preparation. Further detailed engineering analysis and surveying is required to determine the exact dimensions, alignment, and materials used for each segment of proposed revetment repairs and modifications. Cycle 14 funds (this project) will be used to further the engineering and design and get the project closer to shovel ready.