The joint City of Everett and Corps of Engineers project will restore riverine and tidal influence to 93 acres of intertidal riverine habitat. The project is divided into 35 acres as part of the cost-shared Federal Section 1135 restoration project, and 58 acres as a advanced mitigation project of the City of Everett. The project is designed to restore intertidal salmon rearing habitat that historically existed along Union Slough.

The construction of the setback dike was completed in 2004 and the three 180 ft breach openings of the existing levee were completed in Fall 2007. Monitoring for the City's mitigation site identified a number of issues with the drainage of the site between tide cycles and the bridges that were constructed at the dike breach openings. In 2010 the project team began the process of design and permitting to remove the bridges and relocate the pedestrian trail. The north bridge was removed in 2011 and the north breach opening was widened and lowered. The adaptive management effort was completed in 2012, when the Corps' contractor removed the southern two bridges along with remnant dikes at the southern two breach openings. Additional channels were also excavated from the southern two breach opening into the site. Water level monitoring indicates that the site is now matching low tide levels in Union Slough and additional areas have been colonized by intertidal vegetation.

In 2013 the City of Everett will complete additional monitoring at the mitigation site. The 10-year monitoring period of the mitigation site ends in 2017.