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Sound Transit Update:
Sounder
South King County Mobility Coalition
5/9/2019
2
What we’ll cover today
• System expansion
• Kent & Auburn Stations
• Sounder capacity expansion
System expansion
4
More people, more cars
Population growth = traffic delays
Freeway delays each yearAlmost 200,000 new
neighbors added since 2015
5
Meeting growing demand
Average weekday ridership
2010
75,508
2018
160,000
2040
PR
OJE
CT
ED
700,000
550,000
6
South King County
Federal Way Link Extension
Tacoma Dome Link Extension –
Federal Way to
South Federal Way
S Boeing Access Rd light rail
infill station
I-405 BRT – Burien to Tukwila
Sounder station parking and
access improvements; track
and platform upgrades
A
B
C
D
E
7
About Sounder South
• Service between Seattle (King
Street Station) and Lakewood
• Thirteen daily round trips
(8 to Lakewood)
• Special event trains
• Steady ridership growth – over
16,000 daily trips in 2018
8
Steady ridership growth
Kent & Auburn Stations:
Parking & access
improvements
10
Overview
• New parking garages and
pedestrian, bike, and bus
improvements
• Approved by voters in ST2
• 2017 Alternatives Analyses
• ST Board identified preferred
garage locations
11
Kent garage concept
• Approximately 530 stalls
• 3 levels, 2 entrances
• Realigned Railroad Avenue N
• Environmental study to be
released in mid 2019
12
Kent: Potential Pedestrian, Bicycle, and Bus Improvements
13
Auburn garage concept
• Site located at 1st and A
Streets NW
• Approximately 535 parking
spaces for commuters
• Environmental study to be
released in fall
14
Auburn: Potential
Pedestrian,
Bicycle, and Bus
Improvements
Next Steps: Kent & Auburn
Now: Complete early engineering and environmental review
• Open Houses – Fall 2019
• Sound Transit Board actions – Fall 2019
Next: Design
• Permitting, property acquisition, hire construction firm
• Approved by voters in 2016
• Add capacity to meet growing ridership demand
Sounder capacity expansion
17
Overview
• Expanded platforms to
accommodate up to 10-car trains.
• Potential track and signal upgrades
for possible additional trips.
• Access improvements for
pedestrians, bicyclists, buses and
cars.
Platform extension
Track improvements Station access
18
Planning
• First step: Strategic Development & Implementation Plan
• Define the program and schedule
• Analyze existing service
• Model service scenarios
19
Things to consider about expansion
• BNSF owns tracks from Tacoma to
Seattle; new train trips costly
• Freight traffic concentrated outside of
peak commute period
• Midday train storage is limited
• King Street Station tracks and center
platform are constrained
• Restrictions on crew hours
20
Things to consider: Ridership demand
Average weekday boardings, January 2019
0
200
400
600
800
1000
1200
Southbound
0
200
400
600
800
1000
1200
Northbound
21
Public Outreach & Next Steps
• Two rounds of outreach
• July/August: share service scenarios
and learn community priorities
• Fall: share draft Strategic Plan
• Online & in-person engagement
• Sound Transit Board adopts Strategic
Plan – first quarter 2020
• Planning for first round of projects
begins - 2020
Questions?
soundtransit.org