Zackuse Creek Fish Passage and Stream Restoration Project

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Project Description

Spawning areas for native kokanee salmon have reduced to a handful of tributaries to Lake Sammamish when once they were known to spawn throughout Lake Washington, the Sammamish River, and Lake Sammamish. The decline of the local population has been of special concern to Sammamish residents, fisheries and native tribes. Without diversity in available spawning habitat, a single localized event, whether natural or anthropogenic, could destroy the entire population. The Zackuse Creek Fish Passage and Stream Restoration project will aid in the reestablishment of Zackuse Creek as a kokanee spawning area. The project includes two primary objectives: 

  1. Replace the existing culvert under East Lake Sammamish Parkway (ELSP) so that it is fully fish passable and with design elements that emulate a natural stream bed.
  2. Restoration of approximately 400 linear feet of Zackuse Creek upstream of the culvert.

Construction Updates

August 18, 2018

The City’s construction project on East Lake Sammamish Parkway (ELSP) is nearing the end of the second week of full road closure. The Parkway will reopen the morning of August 22, 2018. This extension from the planned closure will allow new water and sewer mains to be installed while avoiding traffic queuing.   

This week, the City’s contractor completed the 20-ft deep excavation under East Lake Sammamish Parkway to remove unstable organic peat. They also installed six feet of quarry spall to provide the culvert support. A crane was mobilized to lift the 40,000 pound culvert pieces into place while trench boxes were used to shore the excavation walls. The contractor plans to complete the permanent water and sewer connections and paving of the open cut prior to the road opening.   Work is planned on both Saturday and Sunday (August 18 and 19). Following the reopening of ELSP, partial road closure between 9:30am and 3:00pm Monday through Friday will have limited impacts to ELSP for the construction of roadside rockeries, guard rails, PSE gas and power reestablishment, and final pavement overlay and striping. Thanks to the Sammamish community for your patience and cooperation during the work on East Lake Sammamish Parkway.

The completion of the culvert under East Lake Sammamish Parkway marks the midway point of the project. The final work will include restoration of approximately 400-ft of upstream creek channel, scheduled to be completed by end of September.

August 10, 2018

The City’s construction project on East Lake Sammamish Parkway is nearing the end of the first week of full road closure. The Parkway will reopen the morning of August 22, 2018. This extension from the planned closure will allow new water and sewer mains to be installed while avoiding traffic queuing.  

This week, the City’s contractor has been able to safely construct water and sewer bypass systems, install the stream bypass and road dewatering systems, prepare trench boxes for the culvert shoring, and start the deep excavation for the culvert. 

Puget Sound Energy (PSE) has scheduled work on Saturday, August 11 to remove overhead power on East Lake Sammamish Parkway that would conflict with the safe crane operation to install the culvert.  No power outages or interruption of power are expected with PSE work. 

The City’s contractor plans to work on Sunday, August 12 between the hours of 9am and 6pm.  They will be removing existing peat material under East Lake Sammamish Parkway that is unsuitable for supporting the culvert.  They may also work on Sunday, August 19 to complete required work during the road closure.        

ROAD CLOSURE

East Lake Sammamish Parkway (ELSP) is scheduled to be fully closed starting at 6 AM on August 6 and opening again by 7 AM on August 22.  ELSP will be closed to all vehicular, bicycle, and pedestrian traffic for the safe construction of the culvert.  Road closure will be located on ELSP just south of Louis Thompson Road to just north of the entrance to East Lake Sammamish Shore Lane (200 E Lake Sammamish Parkway SE).  All driveways on ELSP shall remain open during construction.  A detour route will be signed on 212th Way SE (Snake Hill) and Louis Thompson Road.  See detour map below under the Construction tab on this website.

Please note:

Construction began on July 9, 2018 and is scheduled to be completed by November 2018.  The project schedule can be downloaded below.  Partial road closure with flagger traffic control is expected throughout the duration of the project.  Two week full road closure of East Lake Sammamish Parkway is scheduled from August 6 to August 20. 

On May 15, 2018, the City Council awarded Pacific Civil & Infrastructure (PCI) the construction contract for the Zackuse Creek Fish Passage and Stream Restoration Project.  Construction is scheduled to begin in early July 2018 and be completed by November 2018.    

Due to funding requirements, the culverts under the King County Trail and East Lake Sammamish Shore Lane will not be part of the City project to construct the culvert under E Lake Sammamish Parkway.  That work will be bid separately by King County.

Public Outreach

Two public open houses are planned for the Zackuse Creek Fish Passage and Stream Restoration Project.  The first public open house was held on March 29, 2017 to introduce the project and receive public comment on the preliminary plans.  The second public open house is scheduled for January 10, 2018 to share the 90% design plans with the public and to receive any final public comment before finalizing the plan. On July 18, 2017, the City Council approved the plan for full road closure of East Lake Sammamish Parkway during culvert construction with planned detour routes.  The road closure, detour routes, and traffic control plan will be made available as soon as they are finalized.

Project Partners

The City of Sammamish is fortunate to work with the following partners on this regionally important fish passage and habitat restoration project: Kokanee Work Group, Snoqualmie Tribe, King County Parks, Trout Unlimited, Washington State Fish and Wildlife, Eden Glen HOA, private property owners Wally Pereyra, Peter Weber, Daniel and Laurie Ivanhoff, Gary Mahn, and Mary Ellen Stone.

Timeline

Construction planned for Summer 2018.

Budget

$1.2M    Surface Water Management Capital Fund

Grants

This project is funded in part by the King County Wastewater Treatment Division (Water Works), the King County Flood Control District, and the King Conservation District.

$157,400         King County Water Works Executive Council Grant

$175,000         King County Flood Control District Flood Reduction Grant

$371,154         King County Flood Control District Sub-regional Opportunity Fund

$280,000         King Conservation District

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Permitting

Staff Contact