USA Interstate Index

click on Interstate highway number (e.g., 'I-40')
to view information about a listed highway.
(Note: if the I'state # is red, we have not added it, yet.)

I'state #	States Serviced:	Starts at:	Ends at:	Length
I-4	FL	Tampa FL	Jacksonville FL
I-5	CA, OR & WA	Mexico border	Canada border
I-8	CA & AZ	San Diego CA	I-10 S. of Casa Grande AZ
I-10	CA, AZ, NM, TX, LA, MS, AL & FL	Los Angeles CA	Jacksonville FL
I-15	CA, NV, UT, ID & MT	San Diego CA	Canada border
I-20	TX, LA, MS, AL, GA & SC	I-10 near Kent TX	I-95 at Florence SC
I-25	NM, CO & WY	I-10 at Las Cruces NM	I-90 at Buffalo WY
I-26	TN, NC & SC	Charleston SC	I-81 N. of Johnson City TN
I-29	MO, IA, SD & ND	I-35 near Kansas City	Canada border
I-30	TX & AR	I-20, 5 mi W. of I-820 & Ft Worth.	I-40 at Little Rock AR
I-35	TX, OK, KS, MO, IA & MN	Mexico border at Laredo TX	Duluth MN
I-39	IL & WI	I-55 in Normal, IL	Merrill, WI
I-40	CA, AZ, NM, TX, OK, AR, TN & NC	I-15 at Barstow CA	Wilmington NC
I-43	WI	I-39/90 in Beloit, WI	US-41 in Green Bay, WI
I-44	TX, OK & MO	Wichita Falls TX	I-55 at St Louis MO
I-45	TX	Galveston TX	Dallas TX
I-55	LA, MS, TN, AR, MO & IL	I-10 near New Orleans LA	I-90/94 at Chicago
I-57	MO & IL	I-55 near Sikeston, MO	I-94 at Chicago
I-64	IL, IN, KY WV & VA	I-55 at E. St Louis IL	Norfolk VA
I-65	AL, TN, KY & IN	I-10 at Mobile AL	I-90 at Gary IN
I-69	IN & MI	I-465 at Indianapolis IN	I-94 at Port Huron MI
I-70	UT, CO, KS, MO, IL, IN, OH, PA & MD	I-15 at Cove Fort UT	Baltimore MD
I-71	KY & OH	I-64 at Louisville KY	I-90 at Cleveland OH
I-74	IA, IL, IN & OH*¹	I-80 at Davenport IA	I-75 at Cincinnati OH
I-75	FL, GA, TN, KY, OH & MI	FL-826 at Miami Lakes FL	Canada Border at Sault St Marie MI
I-76	OH, PA & NJ	I-71 at Seville, OH	I-295 at Mt Ephraim, NJ
I-77	SC, NC, VA, WV & OH	I-26 so. of Columbia SC	I-90 at Cleveland OH
I-78	PA NJ & NY	I-81 at Jonestown, PA	New York City (Canal St)
I-79	WV & PA	I-77 No. of Charleston, WV	Erie, PA
I-80	CA, NV, UT, WY, NE, IA, IL, IN, OH, PA & NJ	San Francisco CA	I-95 near Ft Lee NJ
I-81	TN, VA, MD, PA & NY	I-40 near Dandridge TN	Canada border near Watertown NY
I-84	OR, ID & UT; also PA, NY, CT & MA*⁴	I-15 near Brigham City UT*⁴	I-5 at Portland OR*⁴
I-85	AL, GA, SC, NC & VA	I-65 at Montgomery AL	I-95 at Petersburg VA
I-87	NY	I-278 at Bronx NY*²	Canada border near Clamplain NY
I-88	IL; also NY*³	I-80 at East Moline, IL*³	I-290/294 at Chicago. IL*³
I-89	NH &VT	I-93 near Concord NH	Canada border north of St Albans VT
I-90	WA, ID, MT, WY, SD, MN, WI, IL, IN, OH, PA, NY & MA	I-5 at Seattle WA	I-95 at Boston MA
I-91	CT, MA & VT	I-95 at New Haven CT	Canada border north of Lyndonville VT
I-93	MA, NH & VT	I-95 near Dedham MA	I-91 near White River Junction VT
I-94	MT, ND, MN, WI, IL, IN & MI	I-90 at Billings MT	I-69 at Port Huron MI
I-95	FL, GA, SC, NC, VA, MD, NJ, NY, CT, RI, MA, NH & ME	Miami FL	Canada border at Houlton ME

1. I-74 re-appears in North Carolina beginning at I-77 at Bottom NC, through Winston-Salem and Greensboro and, temporarily, ends at Emery NC.
2. I-87 actually starts as the Major Deegan Expressway to the Yonkers border (exit 13). In Yonkers, the exit numbers start
over, again, (from exit 1) and continue to exit 24 in Albany. From exit 6 (in Yonkers) through exit 24 I-87 is a toll highway. In Albany, the exits commence with exit 1, again and I-87 is toll-free to the Canadian border.
3. I-88 Illinois segment connects Davenport, IA to Chicago, IL; Another, short segment in New York connects Binghamton, NY (I-81) to Schenectady, NY II-90)
4. I-84 Western segment connects Portland, OR to I-80 in Echo, UT. Eastern segment connects Scranton, PA (I-81) with Sturbridge, MA (I_90)

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