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Salt Lake City marks completion of 12-year airport rebuild

By Workvado / Litequo LLC · Published · Updated

The $5.1B New SLC program reached its final construction milestone with a 132,000-square-foot Concourse B addition, while seven gates were set to open to passengers Oct. 27.

Salt Lake City International Airport marked the completion of its New SLC redevelopment program on October 24, closing out a phased replacement of three aging terminals with a central terminal and two linear concourses. The Salt Lake City Department of Airports said the program cost USD 5.1 billion and employed nearly 25,000 craft workers over more than 18 million craft hours. The closing ceremony came ahead of a separate operational milestone: the airport said the final section of Concourse B-east, about 132,000 square feet, would open to the public on October 27 with seven gates and six concessions. Five gates were designated for United Airlines and two for common use. The distinction matters: a construction-completion event and passenger access to the new gates were scheduled on different days. The redevelopment is a major public-works achievement, but the staged delivery also shows how airport construction can continue alongside an operating hub.

The new facilities were built in stages rather than through a single airport shutdown. Phase 1 opened in 2020 with the central terminal, parking garage, roadway and western concourse sections; Phase 2 added the east side of Concourse A in 2023; Phase 3 opened the central tunnel and the first Concourse B-east gates in 2024; later gate groups followed in 2025 and 2026. That sequence gave airlines and passengers usable space while subsequent work continued elsewhere on the campus. The airport’s construction history lists demolition of former terminals and concourses after the first new facilities opened, followed by successive extensions and fit-outs. In a live airport, phasing is an operating strategy as much as a construction schedule: each handover must fit passenger circulation, airline use, security, baggage operations and the construction boundary for the next package. The milestone closes that long construction sequence, but it also reflects many earlier transitions between crews and airport operations.

The completed airport has 94 aircraft gates, 101 concessions and four hardstand positions, according to the airport. Its fact sheet gives a planned capacity of 34 million passengers and describes a total facility footprint of 296.7 acres. Aviation Week reported that the previous terminal had been designed for about 10 million annual passengers, while the airport handled roughly 26 million passengers in 2019 before the first new facilities opened and 28 million in 2025. Those figures help explain the capacity rationale, although design capacity is not a forecast of actual traffic or a promise that every gate will be occupied. The terminal and concourse rebuild was paired with landside and airfield infrastructure, including parking, rental-car facilities, an elevated roadway, tunnels and utility plant. The result is a campus-scale replacement program rather than a terminal-only renovation, with passenger-facing buildings dependent on utility, roadway, security and airfield systems operating together.

The physical complexity is visible in the airport’s project data. Its published factsheet lists seven miles of baggage conveyor, more than 3,200 steel piles, 7,600 stone columns for ground stabilization and more than 30,000 separately tracked construction activities. The terminal alone is listed at about 908,754 square feet, while the broader program includes multiple facilities and concourses beyond that figure. HOK, the project architect and master engineer, says it designed the terminal’s mechanical, electrical, plumbing, structural, information-technology and security systems. Because the airport is near the Wasatch Fault and faces seasonal temperature extremes, HOK describes 29 structurally independent buildings that read as one connected terminal, allowing thermal movement while addressing seismic conditions. This is a useful design lesson for contractors: a large connected public building may rely on carefully separated structural systems, extensive interfaces and coordination among specialists, rather than one uninterrupted building frame.

Airport operations shaped the schedule as well as the design. The airport’s public project history describes the work as a series of phases, while HOK says the drop in air travel during the COVID-19 pandemic let the team accelerate the second phase by six months and save millions of dollars. The airport continued to carry passengers through staged openings as work advanced on other portions of the campus. Work of this kind requires construction boundaries to be coordinated with secure areas, aircraft movements and passenger routes; it also requires testing and commissioning before a facility can serve travelers. Each handover required airport and airline teams to shift from a completed construction area to a passenger-ready operating space. Those logistical demands are a central part of the project story, not an incidental detail after the concrete and steel are in place.

The airport says the redevelopment was financed through airport funds, passenger facility charges, customer facility charges, federal grants and airport revenue bonds, with no local tax dollars used. Its published funding table breaks the total into airport funds (19.1 percent), passenger facility charges (7.2 percent), customer facility charges (5 percent), 2017 bonds (20.9 percent), 2018 bonds (17.4 percent), federal grants (4.5 percent) and future bonds (25.9 percent). Those categories show a public airport enterprise using a mix of user fees, federal money, reserves and borrowing to pay for a long capital program. The fact sheet also reports an economic-impact estimate of $5.5 billion, but it does not specify the measurement period or calculation in the summary page. That figure should therefore be kept distinct from the $5.1 billion program cost and from proven operating revenue. For public owners, the practical question is how funding sources, debt service and project phasing line up over many years while maintaining existing service.

The completion announcement also marks the last planned construction stage of a program whose scope changed from initial concepts to a multibuilding campus. The airport says planning took decades before the 2014 groundbreaking and that the redevelopment replaced three obsolete terminals. HOK describes an effort to improve operational efficiency, including aircraft fuel use, emissions and taxi distances through the airport layout. These are design objectives reported by the designer; the available completion materials do not present measured post-opening reductions in fuel burn or emissions. The new complex also includes tunnels between concourses, with the central tunnel linking A and B and moving walkways supporting connections. The architecture, art program and passenger areas are visible outcomes, but the program’s delivery depended on less visible work in baggage, security, utilities, structural engineering, airfield paving and commissioning. The final gates add capacity to the system; they do not by themselves establish how much additional air service airlines will schedule or how quickly passenger volume will grow.

For construction firms, SLC’s closeout offers a project-specific reference in airport delivery: the owner reports 25,000 craft workers, 18 million labor hours and more than 30,000 tracked activities over a decade-plus program. The lessons are practical. A phased airport job needs a durable interface plan among buildings, baggage and security systems, roads, airfield work and airline operations; sequencing must preserve usable facilities as new sections come online; and commissioning, occupancy and airline handover dates must be coordinated with construction completion. The distinction between construction completion and passenger access remains important: built space becomes usable only after operational handover. Contractors considering future airport work can use the published program facts to understand the scale and interfaces involved, while seeking procurement documents for any new opportunity rather than assuming that this completed program leaves a particular package open.

Completion milestone
2026-10-24; airport celebration of final construction phase
Program cost
USD 5.1 billion
Workforce
Nearly 25,000 craft workers; more than 18 million craft hours
Final Concourse B-east section
About 132,000 sq ft; 7 gates and 6 concessions scheduled to open 2026-10-27
Completed airport
94 aircraft gates, 101 concessions, 4 hardstand positions

Sources

  1. Touch Down: SLC International Airport Celebrates the End of an Era, Salt Lake City International Airport, read October 27, 2026
  2. The New SLC Project Fact Sheet, Salt Lake City International Airport, read October 27, 2026
  3. Construction Updates, Salt Lake City International Airport, read October 27, 2026
  4. Salt Lake City International Airport Passenger Terminal, HOK, read October 27, 2026
  5. Salt Lake City Airport Completes 12-Year, $5.1B Rebuild, Aviation Week, read October 27, 2026
  6. Salt Lake City International Airport celebrates end of construction, KSL.com, read October 27, 2026