U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Hawaii Division
Hawaii State Department of Transportation
Plans, designs, constructs, operates, and maintains State facilities in all modes of transportation, including: air, water, and land in the Hawaiian Islands.
http://www.hawaii.gov/dot/
Oahu Metropolitan Planning Organization
Coordinates regional, multimodal transportation planning in the Island of Oahu urbanized area.
http://oahumpo.org/
Maui Metropolitan Planning Organization
Coordinates regional, multimodal transportation planning in the Island of Maui urbanized area.
https://mauimpo.org
Guam Department of Public Works
http://dpw.guam.gov/
American Samoa Department of Public Works
https://asgpublicworks.as/node/1
Commonwealth of the Northern Mariana Islands Department of Public Works
https://opd.gov.mp/library/agency/department-of-public-works.html