Interstate 90

Interstate 90 marker Interstate 90
<mapframe height="240" frameless="1" align="center" width="310">{"properties":{"stroke-width":6,"stroke":"#ff0000","title":"Interstate 90"},"type":"ExternalData","title":"Interstate 90.map","service":"page"}</mapframe> Map of the contiguous United States with I-90 highlighted in red
Route information
Length	3,021.22 mi (4,862.18 km)
Existed	1956–present
NHS	Entire route
Major junctions
West end	File:WA-519.svg SR 519 in Seattle, WA
Major intersections	File:I-5.svg I-5 in Seattle, WA File:I-15.svg I-15 near Butte, MT File:I-25.svg I-25 near Buffalo, WY File:I-35.svg I-35 in Albert Lea, MN File:I-55.svg I-55 in Chicago, IL File:I-65.svg I-65 in Gary, IN File:I-80.svgFile:I-94.svgFile:US 6.svg I-80 / I-94 / US 6 in Lake Station, IN File:I-75.svg I-75 in Rossford, OH File:I-80.svg I-80 in Elyria, OH File:I-95.svg I-95 in Weston, MA
East end	File:MA Route 1A.svgFile:Airport Sign.svg Route 1A/Logan International Airport in Boston, MA
Location
Country	United States
States	Washington, Idaho, Montana, Wyoming, South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Ohio, Pennsylvania, New York, Massachusetts
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future

Interstate 90 (sometimes called I-90) is a very long Interstate Highway in the United States. It goes 3,021 miles (4,862 km) across the country from Interstate 5 in Seattle to Logan International Airport in Boston and is the longest Interstate Highway. I-90 runs through the states of Washington, Idaho, Montana, Wyoming, South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Ohio, Pennsylvania, New York, and Massachusetts.

In some locations, drivers need to pay a toll to drive on Interstate 90.