{{Infobox road
| country = USA
| type = US
| route = 2
| length_mi = 2575
| length_ref = {{citation needed|date=February 2018}}
| established = November 11, 1926<ref name="USH">{{cite web |url=http://wwwcf.fhwa.dot.gov/infrastructure/numbers.cfm |title= From Names to Numbers: The Origins of the U.S. Numbered Highway System |author= Weingroff, Richard F. |publisher=[[Federal Highway Administration]] |access-date=April 21, 2009 |date=January 9, 2009}}</ref>
----
| section1 = Western segment
| length_mi1 = 2115
| length_ref1 = {{citation needed|date=February 2018}}
| direction_a1 = West
| terminus_a1 = {{jct|state=WA|I|5|SR|529}} in [[Everett, Washington|Everett, WA]]<!--the I-5/US 2/SR 529 interchange is one, as such SR 529 should be included per WSDOT's log and interchange diagram despite the AASHTO's outdated 1989 log-->
| junction1 = {{plainlist|1=
*{{jct|country=USA|I|90|US|395}} in [[Spokane, WA]]
*{{jct|country=USA|I|15}} in [[Shelby, Montana|Shelby, MT]]
*{{jct|country=USA|US|87}} near [[Havre, Montana|Havre, MT]]
*{{jct|country=USA|I|29|US|81}} in [[Grand Forks, North Dakota|Grand Forks, ND]]
*{{jct|country=USA|I|35}} in [[Duluth, Minnesota|Duluth, MN]]
*{{jct|country=USA|US|51}} in [[Hurley, Wisconsin|Hurley, WI]]
}}
| direction_b1 = East
| terminus_b1 = {{jct|country=USA|I|75}} in [[St. Ignace, Michigan|St. Ignace, MI]]
----
| section2 = Eastern segment
| length_mi2 = 459.5
| length_ref2 = {{citation needed|date=February 2018}}
| direction_a2 = West
| terminus_a2 = {{jct|country=USA|US|11}} in [[Rouses Point, New York|Rouses Point, NY]]
| junction2 = {{plainlist|1=
*{{jct|country=USA|I|89|US|7}} in [[Burlington, Vermont|Burlington, VT]]
*{{jct|country=USA|I|91|US|5}} in [[St. Johnsbury, Vermont|St. Johnsbury, VT]]
*{{jct|country=USA|US|3}} in [[Lancaster, New Hampshire|Lancaster, NH]]
*{{jct|country=USA|US|1}} in [[Houlton, Maine|Houlton, ME]]
}}
| direction_b2 = East
| terminus_b2 = {{jct|country=USA|I|95}} in Houlton, ME
| states = [[Washington (state)|Washington]], [[Idaho]], [[Montana]], [[North Dakota]], [[Minnesota]], [[Wisconsin]], [[Michigan]]; [[New York (state)|New York]], [[Vermont]], [[New Hampshire]], [[Maine]]
| previous_route = 1
| next_route = 3
| previous_type = US
| next_type = US
}}
