East Lake Sammamish Trail project

South Samammish B Segment - Phase 1 & 2 (Completed Oct 2023)

Location

SE 33rd St to Inglewood Hill Road, approximately 3.55 miles for both phases.

Project Update

The ELST South Sammamish B Segment was constructed in two phases, as two separate projects:

• Phase 1 – SE 33rd Street to Driveway 10 (Pine Lake Creek Community, STA 283+70 to Sta 375+50 on the trail plan sheets) – 1.7 miles. Parks ELST Phase 1 contractor has completed contract work, including installing the trail’s gravel shoulder and intersection safety improvements, as well as a number of action items that have arisen during trail construction. The phase is complete and the trail is reopened.

• Phase 2 - Driveway 10 to Inglewood Hill Road (STA 375+50 to 472+81) – 1.9 miles. Construction began on June 1, 2022, from Mint Grove to Inglewood Hill Road and is now complete and the trail is reopened.

The trail section is now completed. Some additional planting and maintenance work along the corridor may continue to the end of 2023.

The City of Sammamish has approved the Shoreline Substantial Development Permits. Construction began in early 2021.  To view approved permits and plans visit the City of Sammamish webpage.

For additional questions, contact Parks customer service: 206-477-4527 or email at parksinfo@kingcounty.gov.

Project Description

Redevelopment of a 3.55-mile East Lake Sammamish Trail segment between SE 33rd St and Inglewood Hill Road. This trail segment will feature a 12-foot-wide paved surface with two-foot gravel shoulders on each side, providing the highest degree of accessibility to people of all ages and abilities.

When complete, the newly developed trail segment will include the following features:

• 47 new retaining walls to provide slope stability and reduce the trail footprint, resulting in less impact on environmentally sensitive areas and adjacent residents.
• 24 reconstructed intersections with improved sight lines and safety features like concrete warning bands, bollards, striping and consistent signage. Warning bands provide a visual and textural difference from the paved trail’s surface and along with improved signage, indicate an intersection is 75-feet ahead.
• 7 new rest stops for trail users to sit and enjoy views of Lake Sammamish and the surrounding area.
• Approximately 1,500 new native trees and more than 22,000 shrubs providing erosion control, providing increased visual and aural screening of East Lake Sammamish Parkway, wildlife protection and habitat connectivity, and a continuous park like setting along the corridor.
• Over 13,500 linear feet of new chain link fence, installed for safety above steep slopes.
• Over 7,300 linear feet of split rail fence to protect and delineate critical natural areas.
• Over 1400 linear feet of guard rail to protect and separate the trail from vehicles.
• Almost 3.3 acres of wetland, buffer, and shoreline mitigation area restored to increase fish and wildlife habitat and improve biological diversity. Features like habitat logs and brush piles as well as a variety of native plant species that will create multiple vegetation strata as they mature.
• Improved storm water conveyance systems along and across the trail to ensure they can accommodate a 25-year storm event.

Project Funding: Funding for this segment was provided by the voter-approved 2014-2019 Parks, Trails, and Open Space Replacement Levy and the 2020-2025 Parks, Recreation, Trails and Open Space Levy.

South Sammamish Segment B - Phase 1 Project Documents

Guides

• Sight Distance Triangle Memorandum (March 2014)
• Stop Sign Usage (July 2013)
• Vegetation Management Plan Update (July 2014)
• Readers Guide to Understanding the Design Plans (April 2014)
• How the trail alignment is developed  (Jan 2015)
• Landscaping the trail corridor  (Jan 2015)
• Understanding Retaining Walls  (July 2014)

Design

100% Revised Design Plans (June 2021)

Permitting

• Public Comments and King County Parks Responses
• City of Sammamish Staff Report
• Hearing Examiner Decision (November 2019)
• Shoreline Board Decision (November 2018)

Technical Reports

• Critical Area Study (March 2019)
• Technical Information Report (Oct 2016)

Public Outreach

Newsletters:

• Construction Mailer (June 2017)
• Construction Mailer (Feb 2017)
• ELST Project Online FAQ (Jan 2020)

Public Outreach Summaries

• Public Outreach Summary (2nd Quarter 2018)

ELST Updates

ELST South Samm B Weekly Construction Updates