Heavy Haul Network Permits

Working with the Port of Seattle, we’ve made it easier and more convenient to permit and inspect overweight vehicles operating in and out of Seattle’s Heavy Haul Network (HHN Map) or along any of these city streets (list). This partnership, also known as The Northwest Seaport Alliance, helps reduce congestion around the ports while making it easier to conduct business and remain competitive.

You are responsible to verify bridge heights along your planned route.

The Heavy Haul Network Permit is an annual permit that is valid for 12 months from the date of purchase.

How to get a Heavy Haul Network Permit

Apply online, or in person at the traffic permit counter:

Seattle Municipal Tower
700 5th Avenue, 37th Floor Seattle, WA 98104-5043
Monday – Friday, 8:30 AM – 4:30 PM, except holidays

How much does it cost?

$200.00

Transportation

Greg Spotts, Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623
684-Road@seattle.gov

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The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.