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Alcoa Dike Project Update: Rincon Street Closure

Post Date:05/07/2019 7:25 AM

The Alcoa Dike Project continues to make progress. This week, crews will be performing a short-term street closure on Rincon Street on Thursday, May 9.


DATE: Thursday, May 9, 2019
TIME: 9 a.m. to 12 p.m. 
LOCATION: Rincon Street, between Auburndale and Smith
Please follow posted detour route. 

Please be advised that traffic delays are to be expected. Plan accordingly by taking alternate routes and allowing more travel time for known traffic delays. The USACE and City of Corona appreciates your patience and support while we make these important infrastructure improvements.  We apologize for the temporary inconvenience.

About the Project

US Army Corps of Engineers and Orange County Logo

The Alcoa Dike Project “Project” is a United States Army Corps of Engineers (USACE) project in partnership with Orange County, located in the City of Corona, and the purpose of the Project is designed to protect adjacent businesses along Rincon Street from a 190-year flooding event.  This phase of the Project consists of constructing 3 earthen embankment sections, which together will constitute the overall Alcoa Dike.  The dike will be approximately 30 feet tall at its highest point relative to the existing grade and 5,500 feet long. A majority of the material to construct the dikes is at a borrow site approximately 2 miles away.  Construction started in late December 2018 and is anticipated to be completed by Spring of 2020.

For more information about the Alcoa Aluminum Plant Dike Project, please call 1-714-647-3959, email or visit

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