Interstate 84 (I-84) is a major east-west highway in the United States, stretching approximately 1,200 miles. It begins in Portland, Oregon and travels through Idaho, Utah, Wyoming, and Colorado, before ending in Massachusetts. The highway serves as a vital transportation route, connecting various cities and regions along its path. I-84 is known for its scenic views, particularly in Oregon and Idaho, where it passes through mountainous terrain and alongside rivers. The highway also facilitates commerce and travel, linking important urban centers such as Boise and Hartford. It plays a crucial role in the national highway system.