Item No. 6c
Meeting Date: October 22, 2019

2021 - 2025
Airfield Pavement and Supporting
Infrastructure Replacement Program

Program Scope
• Continue programmatic approach of replacing distressed airfield
pavement, joint sealant, and supporting infrastructure at SeattleTacoma International Airport
• Previous 20-years of airfield investments focused on the airfield's
runway and connecting taxiway system

• This CIP will focus on replacements of damaged, high traffic
pavements (and failing utilities beneath those pavements)
supporting aircraft access to the terminals and apron areas

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Program Goals
• Focus on airfield assets having the following criteria:
- (1) significantly exceeded design life

- (2) continual need for emergency repair
- (3) high strategic value to airfield operations

• Maximize FAA Grant Funding - Entitlement & Discretionary
• Minimize and plan for operational impacts by performing early
programmatic construction phasing

• Minimize operational impacts by replacing utilities concurrent to
pavement replacement

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Infrastructure Condition and Age:
• Existing pavements designed for 20-year life now up to 50
years old (average 43 years)

• Existing pavement thickness as thin as 14 inches (average 16
inches) compared to current design of 20 inches or more
• Current aircraft size and number of operations have cracked
and damaged oldest pavements

• Airfield-wide failures of aging utilities - many more than 50
years old

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Infrastructure Condition and Age:

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2021 to 2025 Overall Airfield Pavement and
Supporting Infrastructure Replacement Program
JONIT SEAL
REPLACEMENT, TYP.

PAVEMENT REPLACEMENT,
TYP.

UTILITY
REPLACEMENT,
TYP.

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2021 to 2025 Budget
• Total CIP Estimate
• Value of Pavement Reconstruction
• Value of Utility Upgrades and Replacements
• Estimate of FAA Grant Contributions*

$156,300,000
$114,200,000
$ 42,100,000
$ 49,400,000

*Should more FAA discretionary grant money become available for this program as
packaged, the estimate of total FAA-eligible construction costs are up to $81,000,000
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2021 Project Schedule
• Commission Authorization for Design
• 30% design
• FAA Pre-Design Conference
• Safety Risk Management Panel (SRMP)
• Authorization for bid, award and construction
• Advertise for Bid
• Construction start NTP

Oct 2019
Dec 2019
Jan 2020
May 2020
Oct 2020
Nov 2020
Mar 2021

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