Interstate 90

Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,020.44 miles (4,860.93 km). Its western terminus is in Seattle, Washington, at State Route 519 near T-Mobile Park and Lumen Field, and its eastern terminus is in Boston, Massachusetts, at Route 1A near Logan International Airport. The western portion of I-90 crosses the Continental Divide over Homestake Pass just east of Butte, Montana, connecting major cities such as Spokane, Washington; Billings, Montana; Sioux Falls, South Dakota; and Madison, Wisconsin.

Interstate 90

Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,020.44 miles (4,860.93 km). Its western terminus is in Seattle, Washington, at State Route 519 near T-Mobile Park and Lumen Field, and its eastern terminus is in Boston, Massachusetts, at Route 1A near Logan International Airport. The western portion of I-90 crosses the Continental Divide over Homestake Pass just east of Butte, Montana, connecting major cities such as Spokane, Washington; Billings, Montana; Sioux Falls, South Dakota; and Madison, Wisconsin.