Item No.
Date of Meeting

S 160th Street Lot TNC Improvements
Additional Project Authorization

8j_supp
August 12, 2025

Requested Action
Request Commission authorization for the Executive Director to
take all steps necessary to complete the South 160th Street TNC
Lot Improvement Project at Seattle-Tacoma International Airport
(SEA). This request is an increase in the amount of $1,100,000
for a total authorization of $8,400,000.

2

Project Purpose
Purpose:
To minimize operational maintenance costs and encourage sustainable ground
transportation services with installation of permanent lighting system and EV chargers.
Scope:
• Replacement of existing diesel-powered temporary light plants with permanent
lighting systems
• Installation of ten EV chargers with associated electrical infrastructure upgrades
• Installation of four permanent restrooms for TNC operators
• Installation of security cameras for operational awareness
• Landscaping and irrigation improvements per Port standards
3

Project Location
S 146th St
24th Ave S

Rental Car
Facility

N

S 160th St

S 160th St GT Holding Lot

4

Project Progress Photos

TNC Restrooms

Electrical Infrastructure

5

SEA's Ground Transportation Framework
Guiding Principles

• Reduce environmental
impact
• Reduce roadway
congestion
• Support and improve
customer choice and
experience
• Social equity
• Generate revenue for
sustainable airport

Goals

• 50% scope 3 GHG
reduction
• 30% private vehicle
pick-up/drop-off
• 15 minutes
tower to curb
• Social Equity

Strategies and Tactics

SAMP

e.g. roadway relocation, NE GT

Capital
Projects

e.g. Widen Arrivals Approach

GTAP

Operational

Facility

Behavior Change
e.g. Modeling, SEA Employee
Transportation Strategy (SEA
MOVES)

e.g. TNC rematch, garage utilization
6

• Financial
sustainability

Contracts
Taxi, TNC,
other GT

e.g. e-KPIs, GT electrification
incentive

6

Project Schedule
Completed Work:
• Installation of permanent
restrooms (Q3 2024)
• Installation of permanent lighting
(Q4 2024)
• Completion of landscape
improvements (Q4 2024)
• Completion of electrical
infrastructure upgrades (Q3
2025)

Remaining Work:
• Procure EV chargers Q3 2025
• Complete site improvements Q4
2025
• Install and activate EV chargers
Q4 2025

7

Project Budget
Previous Budget: $7,300,000

Department of Commerce Grant

Revised Budget: $8,400,000

• Reimbursement of up to $1,229,322

Budget increase due to:
• Port purchase and installation of ten EV
fast charging points
• Work previously assumed to be
completed by third party partner

Transformer
Electrical Equipment
EV Chargers

8

Questions?

9