Guam Highway 3 is one of the primary automobile highways in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 territory of Guam

Guam

Guam is an organized, unincorporated territory of the United States located in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Guam is listed as one of 16 Non-Self-Governing Territories by the Special Committee on Decolonization of the United...

.

Route description

It runs in a south to north direction, from a junction with GH-1

Guam Highway 1

Guam Highway 1, also known as Marine Corps Drive, is one of the primary automobile routes in the United States territory of Guam. It runs in a southwest to northeast direction, from the main gate of Naval Base Guam in the western community of Santa Rita in a general northeasterly direction to the...

 near the Micronesia Mall

Micronesia Mall

Micronesia Mall, located in Dededo at the intersection of Guam Highways 1 and 16, is the largest shopping center in the Western Pacific on the tropical island of Guam....

 in the southern community of Tamuning

Tamuning, Guam

Tamuning, also known as Tamuning-Tumon-Harmon is a municipality or "village" located on the western shore of the island of Guam. The village of Tamuning can be viewed as the economic center of Guam, containing Tumon , Harmon Industrial Park, and commercial districts in other parts of the...

 in a general northeasterly direction to the community of Dededo

Dededo, Guam

Dededo is the most populated village of the United States territory of Guam. According to the U.S. Census Bureau, Dededo's population was just under 45,000 in 2010. The village is located on the coral plateau of Northern Guam.- Etymology :...

, where it meets GH-3A and GH-9

Guam Highway 9

Guam Highway 9 is one of the primary automobile highways in the United States territory of Guam.-Route description:This northern route is a relatively short connector between GH-3 and GH-1, skirting the southern reaches of Andersen Air Force Base...

. In between, it passes the U.S. Naval Communications Station Finegayan and the Federal Aviation Administration

Federal Aviation Administration

The Federal Aviation Administration is the national aviation authority of the United States. An agency of the United States Department of Transportation, it has authority to regulate and oversee all aspects of civil aviation in the U.S...

 headquarters on the island.

Major intersections

Location	Mile	Destination	Notes
Tamuning Tamuning, Guam Tamuning, also known as Tamuning-Tumon-Harmon is a municipality or "village" located on the western shore of the island of Guam. The village of Tamuning can be viewed as the economic center of Guam, containing Tumon , Harmon Industrial Park, and commercial districts in other parts of the...			Southern terminus
Gugagon
Dededo Dededo, Guam Dededo is the most populated village of the United States territory of Guam. According to the U.S. Census Bureau, Dededo's population was just under 45,000 in 2010. The village is located on the coral plateau of Northern Guam.- Etymology :...			Northern terminus

Suffixed route

Guam Highway 3A (GH-3A) connects GH-3 and GH-9 to Ritidan Point at the northern tip of the island of Guam in Dededo.