Northwest Seaport Alliance

The Northwest Seaport Alliance (NWSA) is a pioneering marine cargo partnership between the ports of Seattle and Tacoma in Washington state, established in 2014 to unify operations and enhance competitiveness. Forming the fourth-largest container gateway in the United States, the NWSA is a critical economic engine, facilitating over $73 billion in international trade and supporting more than 48,000 jobs. The alliance enables efficient cargo movement between Asia and North America, benefitting from naturally deep-water harbors and proximity to Pacific trade routes. NWSA is especially significant for its role in handling the bulk of trade between Alaska, Hawaii, and the continental U.S., moving about 80% of Alaska's goods. Committed to sustainable growth, the alliance implements green technologies, renewable energy initiatives, and habitat restoration projects, while earning recognition in environmental programs like Green Marine. Continuous modernization of facilities, including upgrades to Terminal 5, ensures the NWSA remains a leader in safe, efficient, and environmentally responsible cargo handling.

Facilities

• Terminal 5 (Seattle)
• Terminal 30 (Seattle)
• West Sitcum Terminal (Tacoma)
• Husky Terminal (Tacoma)
• Pier 7 (Tacoma)
• Blair Terminal (Tacoma)
• TOTE Terminal (Tacoma)
• SSA Marine Terminals (multiple)
• Matson Terminal (Tacoma)

Operating Hours

Generally 8:00 AM to 5:00 PM, Monday through Friday; extended hours and weekend operations available for select terminals depending on cargo volume and shipping schedules.