Louisville Muhammad Ali International Airport advances SDF Next improvements with security, roadway, concourse and energy upgrades

A multi-year capital plan reshaping the terminal and airfield

Louisville Muhammad Ali International Airport is continuing a wide-ranging modernization initiative known as SDF Next, a multi-year capital improvement program spanning the passenger terminal and airfield. The program is structured around phased construction intended to expand passenger-processing capacity, refresh gate and concourse areas, and upgrade core infrastructure that supports both daily operations and long-term growth.

The airport’s public project lists show hundreds of millions of dollars in work already completed since the program’s launch in late 2019, with additional major projects scheduled through the 2025–2026 window and further elements planned beyond 2026.

Major 2025–2026 projects: checkpoint capacity, roadway changes, and airfield work

Planned work for 2025–2026 includes several large-ticket projects focused on passenger flow and resiliency. The airport has identified a $45 million security checkpoint expansion project as a central near-term milestone, alongside a terminal approach roadway realignment budgeted at $49.5 million. The same planning window includes $49.2 million in concourse improvements and a set of airfield projects covering pavement rehabilitation and multiple taxiway reconstructions.

• Security checkpoint expansion opening: $45 million
• Terminal approach roadway realignment: $49.5 million
• Concourse improvements: $49.2 million
• SDF MicroGrid: $32 million
• Geothermal Phase 3 (airside): $20 million
• Airfield projects in 2025–2026: pavement rehabilitation and taxiway reconstructions, plus electrical vault work and runway safety area grading improvements

Airport materials describe the checkpoint expansion as increasing screening capacity by more than 60%, with space designed to support up to 10 screening lanes.

What has been completed so far

The airport’s SDF Next project summaries list completed or substantially completed projects through 2023 and 2024 that include passenger-facing upgrades and behind-the-scenes infrastructure work. Completed items include baggage system and carousel replacements, rental car and baggage-claim improvements, parking enhancements, passenger boarding bridge replacements, and terminal mechanical and electrical upgrades. On the airfield side, the project lists include lighting and signage upgrades, taxiway extensions and reconstructions, and runway/taxiway pavement rehabilitation.

Energy and operational resilience: geothermal and microgrid investments

Energy-related work is a prominent component of the broader improvement initiative. Project lists include multiple phases of geothermal development, including earlier landside phases and a planned airside phase. The program also includes a microgrid project identified at $32 million, reflecting a focus on electrical resiliency and operational continuity for critical systems.

Looking beyond 2026

Future highlights identified beyond 2026 include a new parking garage estimated at $110 million, terminal exterior upgrades, ticketing-level enhancements, and a second phase of an engineered materials arresting system (EMAS) on the east runway. The airport’s planning documents frame these projects as part of a longer-term buildout intended to keep pace with travel demand while modernizing aging facilities and systems.