Juneau: USACE to Mobilize Phase 2 HESCO Barrier Flood Fighting Project Next Week

~ The United States Army Corps of Engineers (USACE) – Alaska District, in partnership with the City and Borough of Juneau (CBJ), is set to begin the first phases of the Phase 2 HESCO barrier project installation along the Mendenhall River. The work, which will be led by USACE contractor Sealaska Constructors, is scheduled to commence during the week of March 16, 2026.

According to a press release issued by USACE, the project will begin with bank armoring along Clinton Drive and then move south along the unprotected areas of the river. The purpose of this project is to provide temporary flood protection against future glacial lake outburst floods (GLOFs) at 100% federal cost, with no cost to CBJ.

This initiative was accepted by USACE in late October 2025 after CBJ requested assistance under USACE Public Law 84-99 Advance Measures Assistance. The scope of this assistance includes riverbank armoring and installation of temporary HESCO flood barriers to construct a fortified, complete temporary flood barrier along the unprotected, populated riverbank areas of the Mendenhall River – referred to as Phase 2 – before July 15, 2026.

In addition to providing technical assistance for Phase 2, USACE is also assisting with repairs and fortification for Phase 1 HESCO flood barriers. This work includes raising and armoring existing barriers to protect against increasing GLOF events. CBJ is responsible for implementing and constructing these repairs with its own contractors.

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The estimated cost for Phase 1 repairs will be funded by an Assembly transfer of funds from the Capital Civic Center project and an Alaska Department of Environmental Conservation State Revolving Fund Loan. This funding will cover mobilization costs for repairs that are expected to be completed by July 2026.

CBJ's Engineering and Public Works department has been working diligently over the past six months since a major GLOF event to document damage, analyze impacts, and utilize the latest available hydrologic and hydraulic modeling to develop plans for Phase 1 repairs. The goal of this ongoing work, in coordination with USACE, is to ensure that these temporary flood fighting projects provide as much protection as possible until a longer-term solution is implemented.

Project managers from CBJ have been in direct communication with property owners and residents who will be impacted by both Phase 1 and Phase 2 projects. More information about flood fighting, emergency preparedness, and the pursuit of a permanent solution can be found at bit.ly/CBJGLOF.

For further details about the Phase 1 and Phase 2 HESCO Barrier Flood Fighting projects, interested parties can contact [insert contact information]. As construction begins on this critical project, the public is asked to avoid the construction area for their safety as well as the safety of workers, residents, and property owners.

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