Interstate 86

Interstate 86 is the designation of two interstate highways in different parts of the United States.

The Western Interstate 86

The Western Interstate 86 is an intrastate Interstate, located entirely within the state of Idaho. It runs from an intersection with Interstate 84 in Heyburn, Idaho to an intersection with Interstate 15 at Pocatello, Idaho.

Length

Miles	km	state
63	101	Idaho
63	101	Total

Major cities along the route

• Pocatello, Idaho

Intersections with other Interstates

• Interstate 84 in Heyburn, Idaho
• Interstate 15 in Pocatello, Idaho

Spur routes

None

The Eastern Interstate 86

The Eastern Interstate 86 runs from an intersection with Interstate 90 in Erie, Pennsylvania to Elmira, New York at the border between Chemung County, New York and Steuben County, New York along what was formerly New York State Highway 17. It will be extended eastward to an intersection with Interstate 87 once key improvements in the Elmira, Binghamton, and Catskills areas are completed.

Length

Miles	km	state
7	11	Pennsylvania
178	286	New York
185	297	Total

Major cities along the route

• Erie, Pennsylvania

Intersections with other Interstates

• Interstate 90 near Erie, Pennsylvania

Spur routes

None

Notes

I-86 was also used to refer to what is now I-84 between Manchester, Connecticut and I-90 in Sturbridge, Massachusetts; this was done so that I-84 could continue from Manchester to Providence, Rhode Island. After environmental opposition "killed" that leg of I-84, I-86 was also deemed surplus to requirements.

Primary Interstate Highways
4 5 8 10 12 15 16 17 19 20 24 25 26 27 29 30 35 37 39 40 43 44 45 49 55 57 59 64 65 66 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 93 94 95 96 97 99 238 H-1 H-2 H-3 A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3