6c Airfield Pavement Replacement Presentation
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 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 2 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 3 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 4 Infrastructure Condition and Age: 5 2021 to 2025 Overall Airfield Pavement and Supporting Infrastructure Replacement Program JONIT SEAL REPLACEMENT, TYP. PAVEMENT REPLACEMENT, TYP. UTILITY REPLACEMENT, TYP. 6 2021 to 2025 Budget 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 7 2021 Project Schedule 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 8
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