2021 – 2025
Airfield Pavement and Supporting
Infrastructure Replacement Program
Item No. 6c
Meeting Date: October 22, 2019
Program Scope
2
• Continue programmatic approach of replacing distressed airfield
pavement, joint sealant, and supporting infrastructure at Seattle-
Tacoma 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
Program Goals
3
• 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
Infrastructure Condition and Age:
4
• 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
Infrastructure Condition and Age:
5
2021 to 2025 Overall Airfield Pavement and
Supporting Infrastructure Replacement Program
6
JONIT SEAL
REPLACEMENT, TYP.
PAVEMENT REPLACEMENT,
TYP.
UTILITY
REPLACEMENT,
TYP.
2021 to 2025 Budget
7
• Total CIP Estimate $156,300,000
• Value of Pavement Reconstruction $114,200,000
• Value of Utility Upgrades and Replacements $ 42,100,000
• Estimate of FAA Grant Contributions* $ 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
2021 Project Schedule
8
• Commission Authorization for Design Oct 2019
• 30% design Dec 2019
• FAA Pre-Design Conference Jan 2020
• Safety Risk Management Panel (SRMP) May 2020
• Authorization for bid, award and construction Oct 2020
• Advertise for Bid Nov 2020
• Construction start NTP Mar 2021
