Issaquah-Pine Lake Road Improvements Project

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Two cars driving away from the camera on Issaquah-Pine Lake Road.

Thank you to everyone who filled out our survey! The survey is now closed, but you can read through the revised design highlights, explore what we’ve heard from community members, and ask any questions below. You can also join us for a virtual community meeting, which will be scheduled soon. Please check back for the meeting date and/or subscribe to our project email list – just look for the “STAY INFORMED” box on this page!



Project overview

The City of Sammamish plans to improve Issaquah-Pine Lake Road Southeast from Southeast 32nd Way to Southeast 44th Street (see the map below). Issaquah-Pine Lake Road is a critical corridor for existing and new residential developments, multiple schools, and commercial areas. The project will aim to improve traffic flow and safety for all users.

Map showing project area. Issaquah-Pine Lake Road Southeast is highlighted from Southeast 32nd Way until Southeast 44th Street. There is a roundabout at the north end of the project area near Sunny Hills Elementary School. Pine Lake Middle School and Sunny Hills Elementary School lie north of the project area. Future Elementary School number 16 lies to the southeast.



Check out the revised design!

Our team has incorporated two rounds of public input into our design to improve the Issaquah-Pine Lake Road corridor. We are now at 60% design, meaning that most of the big elements are already set, but there is room to provide input on the finer details.

Please review the proposed improvements below and ask any questions at the bottom of the page. You can also download a PDF of the full 60% design (For questions or more information about these details, please contact Jed Ireland at 425-295-0563 or jireland@sammamish.us.).

Proposed improvements

*Indicates a new addition or emphasized element based on our last round of public input.

Create a multimodal roadway for people who walk, use a wheelchair, drive, bike, and ride public transit.

  • Include 5-foot wide bike lanes and six-foot wide sidewalks on both sides of the road for the entire project length*
  • Maintain current bus stops locations and add 12-foot wide sidewalks to provide waiting area*
  • Add signaled crosswalks at Southeast 44th Street, Southeast Klahanie Boulevard, Southeast 42nd Street, Southeast 37th Place, and Southeast 32nd Way*
  • Minimize impacts to trees*
  • Maintain one travel lane in each direction from Southeast 32nd Way to Southeast Klahanie Boulevard (with additional turn lanes or pockets where needed)
  • Maintain two travel lanes in each direction from Southeast Klahanie Boulevard to Southeast 44th Street (with additional turn lanes or pockets where needed)

two different cross-sections of Issaquah-Pine Lake Road. The first is a three-lane section with center turn lane.

Click here to see a larger version of the illustration above.

Improve safety for all users.

  • Add a landscaped buffer to separate sidewalks from the roadway where possible without impacting trees*
  • Install a new signal with a crosswalk at Southeast 37th Place for people crossing to the bus stop*
  • Increase roadway lighting, using LED lighting that minimize impacts to nearby residents*
  • Building a raised landscaped center median at select areas of the corridor
  • Reduce median from 10 feet to 8 feet, providing additional space for emergency vehicles*

Improve intersection performance.

  • Replace the roundabout at Southeast 32nd Way with a traffic signal
  • Allow for southbound to northbound U-turns at the Southeast 32nd Way intersection*
  • Add traffic signals at Southeast 37th Place and Southeast 44th Street
  • Add left-turn pockets and two-way left turn lanes for most of the project length*
  • Add right-turn pockets where necessary

Incorporate water quality upgrades.

  • Create flow-control and water quality improvements within Laughing Jacobs Basin
  • Add fish-passable culverts at Laughing Jacobs Creek and Stream C

Working with the community

Since 2018, we’ve reached out to area residents, schools, churches, businesses, community groups, and organizations to learn about their priorities for people who live, walk, use a wheelchair, bike, drive, and ride transit on Issaquah-Pine Lake Road.

Community meeting at a school auditorium. Audience of about 30 to 40 people are looking forward at project presentation.

In fall 2018, the City developed a preliminary design to improve the Issaquah-Pine Lake Road corridor and gathered input through stakeholder interviews, a public meeting, and an online survey. The results from that first round of feedback informed a new, more detailed design that we shared with the community in early 2020. At that point, we gathered community input again through interviews, a public meeting, and an online survey and Q&A.

We incorporated the results of that second round of public input in the 60% design. During winter of 2020 we will gather feedback on the revised design.

What we’ve heard so far

Below we have summarized the major public input themes. Major themes are drawn from public comments that appeared six or more times. You can delve into more details and see how the City responded to each theme in our 30% Design Outreach Summary.

  • Broad support for the project design and improvements
  • Desire to see improvements made on Issaquah-Pine Lake Road to help reduce congestion (particularly during school drop-off and pick-up times) and increase safety
  • Emphasis on improving intersections and turns from and onto Issaquah-Pine Lake Road for all users, particularly near key locations such as schools
  • Skepticism that the two- to three-lane configuration in the proposed design is sufficient for current and future traffic levels, even with other improvements to traffic flow
  • Mixed views on roundabouts versus traffic signals, but overall, more support for traffic signals
  • Request to consider bus stop pull-outs for King County Metro buses so that they do not block traffic
  • Support for proposed bicycle improvements; suggestions to create greater distance between bicycle and traffic lanes to avoid conflicts between people who drive and bike
  • Appreciation for pedestrian infrastructure proposed in the design, including improved sidewalks and crosswalks
  • Push to avoid cutting trees along Issaquah-Pine Lake Road for project purposes and to add more trees along project corridor
  • Suggestion to extend the project area to include Issaquah-Pine Lake Road further south through the intersection with Issaquah-Fall City Road and beyond
  • Request to reduce existing and potential noise and light pollution along the project corridor
  • Urging to minimize construction duration and impacts to the community
  • Appeal for project to continue to inform and involve the public in the decision-making process, including diverse communities in the area, such as South Asian American and Chinese American communities


Next steps

The Issaquah-Pine Lake Road Improvements project is at 60% design. As mentioned above, most of the big elements are already set, but we are still refining the details. Throughout winter of 2020, we are collecting input. You can ask questions below and/or join us on our virtual public meeting, which will be scheduled soon.

The City will review and consider feedback from community members for 90% design. Once the we finalize the design and complete the nearby Issaquah-Fall City Road project construction, we will acquire necessary right of way and begin construction.



Thank you to everyone who filled out our survey! The survey is now closed, but you can read through the revised design highlights, explore what we’ve heard from community members, and ask any questions below. You can also join us for a virtual community meeting, which will be scheduled soon. Please check back for the meeting date and/or subscribe to our project email list – just look for the “STAY INFORMED” box on this page!



Project overview

The City of Sammamish plans to improve Issaquah-Pine Lake Road Southeast from Southeast 32nd Way to Southeast 44th Street (see the map below). Issaquah-Pine Lake Road is a critical corridor for existing and new residential developments, multiple schools, and commercial areas. The project will aim to improve traffic flow and safety for all users.

Map showing project area. Issaquah-Pine Lake Road Southeast is highlighted from Southeast 32nd Way until Southeast 44th Street. There is a roundabout at the north end of the project area near Sunny Hills Elementary School. Pine Lake Middle School and Sunny Hills Elementary School lie north of the project area. Future Elementary School number 16 lies to the southeast.



Check out the revised design!

Our team has incorporated two rounds of public input into our design to improve the Issaquah-Pine Lake Road corridor. We are now at 60% design, meaning that most of the big elements are already set, but there is room to provide input on the finer details.

Please review the proposed improvements below and ask any questions at the bottom of the page. You can also download a PDF of the full 60% design (For questions or more information about these details, please contact Jed Ireland at 425-295-0563 or jireland@sammamish.us.).

Proposed improvements

*Indicates a new addition or emphasized element based on our last round of public input.

Create a multimodal roadway for people who walk, use a wheelchair, drive, bike, and ride public transit.

  • Include 5-foot wide bike lanes and six-foot wide sidewalks on both sides of the road for the entire project length*
  • Maintain current bus stops locations and add 12-foot wide sidewalks to provide waiting area*
  • Add signaled crosswalks at Southeast 44th Street, Southeast Klahanie Boulevard, Southeast 42nd Street, Southeast 37th Place, and Southeast 32nd Way*
  • Minimize impacts to trees*
  • Maintain one travel lane in each direction from Southeast 32nd Way to Southeast Klahanie Boulevard (with additional turn lanes or pockets where needed)
  • Maintain two travel lanes in each direction from Southeast Klahanie Boulevard to Southeast 44th Street (with additional turn lanes or pockets where needed)

two different cross-sections of Issaquah-Pine Lake Road. The first is a three-lane section with center turn lane.

Click here to see a larger version of the illustration above.

Improve safety for all users.

  • Add a landscaped buffer to separate sidewalks from the roadway where possible without impacting trees*
  • Install a new signal with a crosswalk at Southeast 37th Place for people crossing to the bus stop*
  • Increase roadway lighting, using LED lighting that minimize impacts to nearby residents*
  • Building a raised landscaped center median at select areas of the corridor
  • Reduce median from 10 feet to 8 feet, providing additional space for emergency vehicles*

Improve intersection performance.

  • Replace the roundabout at Southeast 32nd Way with a traffic signal
  • Allow for southbound to northbound U-turns at the Southeast 32nd Way intersection*
  • Add traffic signals at Southeast 37th Place and Southeast 44th Street
  • Add left-turn pockets and two-way left turn lanes for most of the project length*
  • Add right-turn pockets where necessary

Incorporate water quality upgrades.

  • Create flow-control and water quality improvements within Laughing Jacobs Basin
  • Add fish-passable culverts at Laughing Jacobs Creek and Stream C

Working with the community

Since 2018, we’ve reached out to area residents, schools, churches, businesses, community groups, and organizations to learn about their priorities for people who live, walk, use a wheelchair, bike, drive, and ride transit on Issaquah-Pine Lake Road.

Community meeting at a school auditorium. Audience of about 30 to 40 people are looking forward at project presentation.

In fall 2018, the City developed a preliminary design to improve the Issaquah-Pine Lake Road corridor and gathered input through stakeholder interviews, a public meeting, and an online survey. The results from that first round of feedback informed a new, more detailed design that we shared with the community in early 2020. At that point, we gathered community input again through interviews, a public meeting, and an online survey and Q&A.

We incorporated the results of that second round of public input in the 60% design. During winter of 2020 we will gather feedback on the revised design.

What we’ve heard so far

Below we have summarized the major public input themes. Major themes are drawn from public comments that appeared six or more times. You can delve into more details and see how the City responded to each theme in our 30% Design Outreach Summary.

  • Broad support for the project design and improvements
  • Desire to see improvements made on Issaquah-Pine Lake Road to help reduce congestion (particularly during school drop-off and pick-up times) and increase safety
  • Emphasis on improving intersections and turns from and onto Issaquah-Pine Lake Road for all users, particularly near key locations such as schools
  • Skepticism that the two- to three-lane configuration in the proposed design is sufficient for current and future traffic levels, even with other improvements to traffic flow
  • Mixed views on roundabouts versus traffic signals, but overall, more support for traffic signals
  • Request to consider bus stop pull-outs for King County Metro buses so that they do not block traffic
  • Support for proposed bicycle improvements; suggestions to create greater distance between bicycle and traffic lanes to avoid conflicts between people who drive and bike
  • Appreciation for pedestrian infrastructure proposed in the design, including improved sidewalks and crosswalks
  • Push to avoid cutting trees along Issaquah-Pine Lake Road for project purposes and to add more trees along project corridor
  • Suggestion to extend the project area to include Issaquah-Pine Lake Road further south through the intersection with Issaquah-Fall City Road and beyond
  • Request to reduce existing and potential noise and light pollution along the project corridor
  • Urging to minimize construction duration and impacts to the community
  • Appeal for project to continue to inform and involve the public in the decision-making process, including diverse communities in the area, such as South Asian American and Chinese American communities


Next steps

The Issaquah-Pine Lake Road Improvements project is at 60% design. As mentioned above, most of the big elements are already set, but we are still refining the details. Throughout winter of 2020, we are collecting input. You can ask questions below and/or join us on our virtual public meeting, which will be scheduled soon.

The City will review and consider feedback from community members for 90% design. Once the we finalize the design and complete the nearby Issaquah-Fall City Road project construction, we will acquire necessary right of way and begin construction.


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    Does your traffic projection/analysis take into account how many people U turn at 32nd roundabout to go back up into Sunny Hills Elementary? The lights will need to give a priority to these people coming down the hill from PLMS, otherwise they will never be able to U-turn given the quantity of traffic coming up from Fall-City Road all the time. Most traffic projections will assume there is a left turn into the school, when cars arrive at their destination, but you cannot here and it would be unsafe to change that. The roundabout keeps all parents moving during drop off and pick up.

    Schoolmom asked 10 months ago

    Yes, our traffic modeling did take into account the U-turns that occur at the SE 32nd Street roundabout.  When we collected our traffic counts, we counted 35 vehicles making the U-turn in the morning peak hour (presumably those would be the parents dropping students off at the elementary school), and 10 vehicles making the U-turn in the evening peak hour. The signal timing that we are designing the intersection for assumes that the southbound U-turn movement would be a protected movement.


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    Have you considered a combination walking/bidirectional bike path on one side of the road or other? This would be more friendly for young children and families and would enable safe cycling to schools (Sunny Hills, PLMS, and the new school near the Klahanie entrance). In addition, if extended to Fall City Road, this would connect with the existing path that leads to the Issaquah Highlands. Finally, if traffic speeds are slow enough, bike lanes in the roadway would only be needed on the uphill sides of the road. Slower cyclists could use the walking-bike path. Faster cyclists would use uphill bike lane or merge with auto traffic on the downhills.

    Jim Laudolff asked 11 months ago

    Other areas of the City are planned to include shared use paths, but this road has not been planned to include them.

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    Does the City have any plans to incorporate the same improvements till the intersection of Issaquah - Fall City Road? The options to walk / bike along the stretch between SE. Klahanie Blvd and Issaquah - Fall City Road is very slim and pretty dangerous with the flow of traffic.

    Kaushik asked 11 months ago

    Yes, the City doe have plans to extend these improvements to the intersection of Iss-Fall City Road as part of Phase 2 corridor improvement. Improvements between that intersection and SE 48th Street will require coordination with the City of Issaquah as it is within its jurisdiction.

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    There is currently MAJOR work being done on Iss-Fall City Rd, with a road closure planned for Spring to Fall 2020 that will significantly affect Klahanie residents. Iss-Pine Lake road will be the "thoroughfare" during that time, which will increase traffic on Iss-Pine Lake road in a big way. SO - My question is - when is this road work to begin? I would also think that we all will need a traffic break after Fall City road work is completed. I suggest delaying this project for a couple of years.

    that asked 11 months ago

    Yes, construction on this road is planned for 2024, after Iss-Fall City Road is completed.

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    Are there plans to improve the section of Issaquah Pine right before Issaquah Fall City Rd? As a bike commuter, the north bound shoulder is eroding and narrow is sections, right as cars are merging down to one lane, too.

    Nsmaassel asked 11 months ago

    The City has plans to improve this section of the Issaquah-Pine Lake Road corridor as part of a future second phase of the corridor development, including bike lanes, to the Issaquah-Fall City Road intersection. Currently, this section with the merge immediately north of the intersection is within the City of Issaquah.  Any future work in this area will require coordination with the City of Issaquah.


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    What will be the auto traffic speed limit along this stretch of road?

    Jim Laudolff asked 11 months ago

    The posted speed limit will remain 35 mph.

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    Can you provide evidence that a traffic signal would perform better than the roundabout for all users including bikes and pedestrians? I have seen no problems with the roundabout that I don't see with traffic lights. In fact the traffic lights in Sammamish tend to several penalize pedestrians by not allowing crossing on all four corners and having extremely long signal times. Removing the roundabout is a waste of money.

    James Laudolff asked 11 months ago

    Our analysis shows that the existing roundabout will not be able to accommodate the increased traffic that is projected by 2035 and ensure the adopted level of service will be met. Our traffic simulation demonstrates that a traffic signal here will perform better than the existing roundabout.  The roundabout cannot be widened to accommodate future traffic projections in this location due to the limited availability of City owned Right of Way. A video of the traffic simulation will be shown at the upcoming Community Meeting (7pm, January 22nd at Pine Lake Middle School) where we intend to show how the signal will improve traffic operations. Another advantage of a traffic signal is that they are generally easier and safer for school crossing guards to assist with pedestrian traffic. The signalized intersection design accommodates bicycle traffic in designated bike lanes. To navigate a roundabout, bicyclists either navigate in the vehicular lane, or must use the pedestrian facilities.