Guam Highway 17Guam Highway 17 is one of the primary automobile highways in the United States territory of Guam.Route descriptionGH-17 provides a more direct route across the southern part of the island, running from Guam [Highway 5|GH-5] in the western village of Santa Rita to GH-4 along the east coast in Yona. GH-4A also splits off the road in Talofofo to provide a more southerly connection to GH-4.