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STNI

STNISea-Tac Noise.Info

  • Solve for Sea-Tac. Solve for every airport.
  • Since 2016, working to obtain justice for everyone living under the flight path.
  • Less Noise. Cleaner Air. Better Public Health. Compensation.
  • Everything you think you know about the airport is wrong.

TagConstruction(149)

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  • 2026-01-01

    2026 Airfield Work Areas Layout Plan

    ★
    A color-coded site plan map of Seattle-Tacoma International Airport showing 13 designated 2026 Airfield Work Areas, including Runway 16C-34C reconstruction (blue), Taxiways N and Z improvements (orange), and multiple cargo area utility and rapid-set projects. The map identifies contractor staging areas, Olympic Road, Cascade Road, Airport Expressway, and Pacific Road as geographic references.
    CategoriesKey Documents Tags1st Runway, Airport Expansion, Airport Layout Plans, Airport Maintenance Technology Magazine, Construction, Runways, Sea-Tac Airport, Taxiways
  • August 11, 2026 upgradesea sce concourselevellookingeast 1500x844 web
    2026-08-10

    SEA Airport Moves Forward with Next Major Renovation: S Concourse

    August 11, 2026 The Port of Seattle Commission authorized initial funding today for the next significant modernization project at Seattle-Tacoma International Airport (SEA) — the S Concourse Evolution (SCE) — with major construction scheduled to start in 2027. As part of the $5.5 billion Upgrade SEA capital improvement program, the estimated $2.5 billion S Concourse
    CategoriesFrom The Web TagsAirport, Airport Expansion, Construction, Port Of Seattle Commission, Sea-Tac Airport
  • Iaf seating
    2026-07-16

    International Arrivals Facility seating area under construction

    Interior view of the International Arrivals hall at Seattle-Tacoma International Airport (SEA), identifiable by the 'International Arrivals – EXIT ONLY' signage visible on the upper right. The space features newly installed terrazzo flooring with a wave pattern and modular concrete seating blocks, with a worker in a high-visibility vest suggesting ongoing construction or finishing work.
    TagsConstruction, IAF, International Arrivals Facility, Sea-Tac Airport, Terminal
  • 2025-11-24

    Interlocal agreement for the construction of the Miller Creek Stream Realignment and Daylighting Project

    This interlocal agreement between the City of SeaTac and the City of Burien outlines roles, responsibilities, and cost-sharing for the Miller Creek Stream Realignment and Daylighting Project, which will improve fish passage and replace an aging culvert under Des Moines Memorial Drive. Burien will design and construct the project, while SeaTac agrees to reimburse Burien up to $985,000 for work performed within SeaTac's right of way. SeaTac retains inspection and approval rights over all construction elements within its jurisdiction.
    TagsCity of Burien, City Of SeaTac, Construction, Interlocal Agreement, Miller Creek
  • Seatac Miller Creek Ila 20A074 Pdf
    2025-11-24

    Interlocal agreement for the construction of the Miller Creek Stream Realignment and Daylighting Project

    This interlocal agreement between the City of SeaTac and the City of Burien outlines roles, responsibilities, and cost-sharing for the Miller Creek Stream Realignment and Daylighting Project, which will improve fish passage and replace an aging culvert under Des Moines Memorial Drive. Burien will design and construct the project, while SeaTac agrees to reimburse Burien up to $985,000 for work performed within SeaTac's right of way. SeaTac retains inspection and approval rights over all construction elements within its jurisdiction.
    TagsCity of Burien, City Of SeaTac, Construction, Interlocal Agreement, Miller Creek
  • Airport terminal corridor with temporary construction hoarding panels

    A long corridor with white modular hoarding panels framed in aluminum, consistent with temporary construction barriers used during renovation or build-out work. The arched ceiling structure and patterned carpet are characteristic of a major airport terminal passageway.
    TagsConstruction, Sea-Tac Airport, Terminal, Third Runway
  • STARC: Undisrupting renovations with temporary walls for airports

    Chaotic. Expensive. Time consuming. All things that come to mind when describing the airport experience for passengers. The same things come to mind when considering most temporary construction containment methods. Well, any other than STARC, that is. Our temporary reusable walls keep the dust, debris and disturbances far away from passengers and employees during airport
    CategoriesFrom The Web TagsConstruction
  • 2024-12-21

    Construction Site with Steel Beam Installation

    A crane lifts the final steel beam during a topping-out ceremony, decorated with an evergreen tree and an American flag — a traditional construction milestone. A large crowd of workers in high-visibility vests and hard hats gather to observe the event at an active multi-story construction site.
    TagsAirport, Airport Expansion, Construction
  • 2024-08-01

    Industrial facility with construction equipment

    A Caterpillar backhoe loader operates in front of a large industrial facility featuring numerous exhaust stacks or vent pipes, illuminated by warm light at dusk. Snow-capped mountains are visible in the background; a building labeled '04N' is visible on the right side of the facility.
    TagsAircraft Maintenance, Airport, Construction
  • SEA TAC bridge 2 Clark Construction

    Large-scale structural demolition or construction work on the airside of Seattle-Tacoma International Airport, with visible Alaska Airlines signage, gate markers S5 and S6, and a Morrow Equipment Co. scaffold/crane tower. Multiple cranes including yellow Liebherr-type and blue Genie aerial lifts are actively rigging a large steel truss structure near the terminal.
    TagsAlaska Air, Construction, Sea-Tac Airport, Terminal

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

    [...]

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Issues

Sea-Tac Airport is currently undergoing the largest and longest expansion in its history, collectively known as the Sustainable Airport Master Plan (SAMP). Some of it you can already hear, but you’re probably not aware of what it all means. Here’s what you need to know.
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Read This!

As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.
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