16
Department of Transportation Highland Park Area Safety Project Highland Park Action Committee (HPAC) Jim Curtin, James Le 10/23/2019
Department of Transportation
Highland Park AreaSafety Project
Highland Park Action Committee (HPAC)Jim Curtin, James Le10/23/2019
Department of Transportation
Our vision, mission, and core values
Committed to 6 core values:• Equity• Safety• Mobility• Sustainability• Livability• Excellence
Vision: Seattle is a thriving equitable community powered by dependable transportation
Mission: to deliver a transportation system that provides safe and affordable access to places and opportunities
Department of Transportation
Presentation overview
• Background• Existing conditions• Concepts• General Q&A• Feedback session
Department of Transportation
Goals
• Improve safety for ALL• Identify and implement safety
improvements• Enhance traffic operations• Opportunity for public input
Highland Park Way SW & SW Holden St – looking westbound
Department of Transportation
Existing conditions
• Principal arterial north of SW Holden St• Minor arterial south of SW Holden St• Major route into and out of West Seattle• Serves up to 20,500 daily vehicles• Metro Route #131 serves +1,400 daily trips• The intersection is 90 feet wide • Sight line issues with an 11% grade
11% grade
SW Holden St
N
15,100 daily veh
SW Portland St
SW Holden St
Department of Transportation
Collision dataLast 5 years (2014-2018)• 107 police reported crashes
• 1 pedestrian-vehicle crash• 1 bicycle-vehicle crashes• 39 injury crashes• 2 serious injury crash*• 2 fatalities
• Primary crash pattern at Highland Park Way SW & SW Holden St is NB left turning vehicles against southbound vehicles
9thAv
e SW
Highland Park Playground
Highland Park Elementary Westcrest
Park
SW Holden St
SW Henderson St
16th
Ave
SW
SW Thistle St
SW Cloverdale St
Highland Park Improvement Club
SW Kenyon St
SW Webster St
SW Myrtle St
N
Project area
* 6/10/2019 – one serious injury crash at Highland/Holden
Department of Transportation
Recent improvements
Near term improvements made in late 2018
Department of Transportation
Recent improvements – “zig zag” approaches
9th Ave SW and SW Cloverdale St 9th Ave SW and SW Trenton St
Department of Transportation
Recent improvements
Installed two sets of speed cushions near 16th Ave SW/SW Myrtle St for Sanislo Elementary School (“Your Voice, Your Choice” and Safe Routes to School)
Department of Transportation
Potential scope
9thAv
e SW
Existing Delridge Greenways (2013)
Highland Park Playground
Highland Park Elementary
WestcrestPark
SW Holden St
SW Henderson St
16th
Ave
SW
SW Cloverdale St
Highland Park Improvement Club
17th
Ave
SW
SW Kenyon St
SW Webster St
SW Myrtle St
Highland Park Connection (2018)
• Intersection improvements at Highland Park Way SW/SW Holden St and 16th Ave SW/SW Holden St
• Evaluate opportunities for new crosswalk and bike facilities
• Channelization changes, speed cushions, and/or curb bulbs to reduce vehicular speeding
N
• Update traffic signal• Curb ramps
• Traffic signal?• Enhance lighting• Sidewalks, curb ramps,
landscaping to shorten crossing distances
• Evaluate treatments to reduce vehicular speeds (37 MPH, 85th percentile speeds)
• Evaluate opportunities for new crosswalk and bike facilities
• Evaluate treatments to reduce vehicular speeds (43 MPH, 85th percentile speeds)
• Evaluate opportunity for bike connection to Duwamish Trail
SW Trenton St
21th
Ave
SW
Department of Transportation
Roundabout
N
Benefits• Improved traffic flow (compared to a
traffic signal)• Slows vehicles down to 20-25 MPH at the
intersection• Provides visual gateway into West SeattleConsiderations• 8 feet of roadway grading needed on
north approach (traffic circulating within roundabout should be on a level grade)
• Significantly higher cost Roundabout concept (2019)
SW H
olde
n St
Grading for roundabout
Existing grade
8 feet gradeCirculating
traffic
Department of Transportation
Traffic signal
Neighborhood Street Fund (2019) concept
Benefits• Addresses primary crash pattern
(northbound left turning vehicles against southbound thru)
• Enhances operations for eastbound traffic
• New marked crosswalks• Provides dedicated time for
people driving, walking/rolling, or biking
• Opportunity for public art
Department of Transportation
Funding$3.85 million• $3.5 million from the Mayor’s 2020 Proposed
Budget (pending Council adoption)• $350,000 remaining from Vision Zero*
* $500,000 total contribution from Vision Zero ($150,00 was spent for analysis and early design)
Department of Transportation
Project scheduleDate Activity/action
Fall 2019 Issues identification and design
Winter 2020 Outreach and design
Spring 2020 Design alternatives review meeting
Summer 2020 Final design meeting
2021 Construction
Department of Transportation
Feedback session
• Share your experiences• Potential topics:
• Channelization• Bicycle facilities• Crosswalks/sidewalks• Traffic signal / roundabout• Transit• Pavement condition• Public space opportunities
Department of Transportation
Questions?
[email protected] [email protected]
www.seattle.gov/transportation
