Interstate 90 Cities Coast-to-Coast: Complete West-to-East Listing

Interstate 90 (I-90) is the longest Interstate Highway in the US (3,020 mi / 4,860 km), spanning Seattle to Boston. Major cities along the route:

Washington

• Seattle (western terminus)
• Bellevue

Idaho

• Coeur d'Alene
• Post Falls
• Spokane

Montana

• Missoula
• Butte
• Bozeman
• Livingston
• Three Forks

Wyoming

• Big Timber
• Laurel
• Billings
• Hardin
• Crow Agency
• Sheridan

South Dakota

• Spearfish
• Rapid City
• Wall
• Kadoka
• Murdo
• Mitchell
• Sioux Falls

Minnesota

• Albert Lea
• Austin
• Rochester
• Winona
• Wabasha
• Red Wing
• Hastings
• St. Paul
• Minneapolis

Wisconsin

• La Crosse
• Onalaska
• Tomah
• Wisconsin Dells
• Portage
• Baraboo
• Madison
• Beloit

Illinois

• Rockford
• Belvidere
• Elgin
• Itasca
• Elk Grove Village
• Chicago (Skyway/Indiana Toll Road)

Indiana

• Gary
• Hammond
• Indiana Toll Road continues

Ohio

• Toledo
• Sandusky
• Cleveland
• Elyria
• Youngstown

Pennsylvania

• Erie

New York

• Buffalo (via I-90/NY Thruway)
• Cheektowaga
• West Seneca
• Hamburg
• Orchard Park
• Lackawanna

Massachusetts (Eastern Terminus)

• Springfield
• Worcester
• Framingham
• Boston (I-93/Route 1A final miles)

Note

List includes incorporated cities directly on I-90; bypassed county seats and unincorporated places omitted. Mileage varies by alignment.