Delridge Way SW - RapidRide H Line is now at Final Design

Delridge Way SW Rapid Ride H Line project updates:
In collaboration with King County Metro, we’re working to make Delridge Way SW a better street. Since 2016 we have been working with community members to incorporate feedback on street design and upgrades to Route 120 into the RapidRide H Line. We appreciate your involvement and are excited to announce we have reached final design!

Construction is anticipated to begin this summer and to wrap up in 2022. As we get closer to construction, we will provide advance notice through a variety of ways including text messages, website updates, and email updates.

Meet with us to learn about what to expect during construction for the Rapid Ride H Line Project on Delridge Way SW. We’d like to offer you a phone briefing to answer your questions about construction. Please let us know if you’re interested in scheduling a call.

Final design updates:
Based on community feedback this year, we’ve made some changes to the design:

Traffic operations and safety
- Reduced posted speed limit south of SW Orchard St from 30 mph to 25 mph in compliance with citywide Vision Zero initiative to lower arterial speed limits
- Added 2 traffic diverters on the 26th Ave SW neighborhood greenway, at SW Genesee St and SW Brandon St, more information below
- Raised the protected bike lane to curb height along the island on the northwest corner of Delridge Way SW and SW Henderson St/SW Barton St to improve visibility for people biking
- Added a planter strip along the south side of SW Barton St at the Delridge Way SW intersection to add more protection for the sidewalk
- Added painted curb bulbs on east legs of 21^st Ave SW and SW Croft St at Delridge Way SW to reduce the intersection footprints and improve pedestrian safety
- Added a northbound left-turn lane into SW Webster St and a small refuge island for eastbound Webster traffic turning left onto Delridge Way SW
Interagency coordination
- Moved the northbound RapidRide station at SW Thistle St from the northeast corner to the southeast corner of the intersection to avoid a large existing Seattle City Light (SCL) vault
- Reduced pavement restoration on residential side streets where not triggered by utility upgrades to reduce construction impacts in neighborhoods
- Reduced pavement restoration on Delridge Way SW between SW Andover St and SW Genesee St to avoid the need to remove new pavement when Sound Transit builds Delridge station
- Removed median from SW Andover St to SW Dakota St to avoid the need to remove new medians, landscaping, and irrigation when Sound Transit builds Delridge station
- Extended storm drainage on Delridge Way SW between SW Findlay St and SW Hudson St, and on SW Hudson St between Delridge Way SW and 25^th Ave SW to provide for future developments
- Added water quality facilities at SW Holden St and SW Thistle St where existing facilities are undersized and do not meet Code
- Altered tree planting locations in the proposed median islands to prevent tree roots from growing into existing Seattle Public Utility (SPU) pipes
Emergency response
- Added an emergency median cut-thru for Seattle Fire Department (SFD) in the long island north of SW Hudson St to improve emergency response routing
- Changed concrete curbs separating northbound and southbound traffic with painted stripes at most intersections to allow better navigation of emergency vehicles and improve emergency response routing

26th Ave SW Neighborhood Greenway traffic diverters:

When we install a new neighborhood greenway, we use data to drive decision-making at intersections; specifically, what kinds of traffic control devices to install and the configuration. After evaluating 26th Ave SW, we found that the corridor has grown in volume and density. The neighborhood greenway on 26th Ave SW now meets the threshold to install traffic diverters. We have decided to install 2 traffic diverters at the intersections at SW Genesee St and SW Brandon St. These diverters will be physical barriers used to reduce traffic on the greenway.

With the new diverters, traffic at these intersections will work in the following way:

Visit our website for more information on what to expect during construction.

How we are preparing for construction:
With the Delridge community in mind, we are working on the construction contracts for this Delridge RapidRide H Line project. Prior to bringing on the contractor, we have put some guidelines in place to minimize the construction impacts the community is likely to experience. These guidelines come from over 4 years of community engagement with organizations and people living on or near Delridge Way SW. Some of those considerations include:

Receiving 6 days advanced notice from our contractor about upcoming residential driveway closures to translate information for residence, this is longer than our standard 3 days notice
Reducing or limiting work around holidays and cultural festivals such as Tet festival, Friday’s during Ramadan in the southern corridor, and Holy Week
Installing temporary crosswalks across Delridge Way SW in areas where sidewalks will be closed for extended periods of time. Temporary crossings will be lit, painted markings on the street, and ADA accessible.
Coordinating utility work near Louisa Boren K-8 around school drop off and pick up times
Emphasizing a “good neighbor” policy for the contractor, which includes site cleanliness and staging area considerations

What should you expect during construction?
We anticipate construction to begin later this summer and occur on weekdays between 7 AM and 7 PM.

Construction impacts may include:

Example of concrete paving from SW Seattle Paving: 35th/ Avalon Project on SW Avalon Way

Thank you Seattle Voters
This project is partially funded by the 9-year Levy to Move Seattle, approved by voters in 2015. Additional grant funding has been secured and is being sought by both Seattle and King County. Delridge Way SW is one of seven corridors identified in the Levy to see transit improvements. Visit our program website to learn more details.

Thank you,
Dan Anderson
Rapid Ride H Line Outreach Lead

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