Interstate 4
|
- Tampa, FL (I-275) to Daytona Beach, FL (I-95)
|
Interstate 5
|
- San Ysidro, CA (Mexican border) to Blaine, WA (Canadian border)
Associated routes: I-105 | I-205 | I-305* | I-405 | I-505 | I-605 | I-705 | I-805 |
Interstate 8
|
- San Diego, CA to Casa Grande, AZ (I-10)
|
Interstate 10
|
- Santa Monica, CA to Jacksonville, FL (I-95)
Associated routes: I-110 | I-210 | I-310 | I-410 | I-510 | I-610 | I-710 | I-910 |
Interstate 12
|
- Baton Rouge, LA (I-10) to Alton, LA (I-10)
|
Interstate 15
|
- San Diego, CA (CA-15) to Sweetgrass, MT (Canadian border)
Associated routes: I-115 | I-215 | I-315* | I-515 |
Interstate 16
|
- Macon, GA (I-75) to Savannah, GA
Associated route: I-516 |
Interstate 17
|
- Phoenix, AZ (I-10) to Flagstaff, AZ (I-40)
|
Interstate 19
|
- Nogales, AZ (Mexican border) to Tucson, AZ (I-10)
|
Interstate 20
|
- Kent, TX (I-10) to Florence, SC (I-95)
Associated routes: I-220 | I-520 | I-820 |
Interstate 22
|
- Memphis, TN (I-55 & I-40) to Birmingham, AL (I-20, I-59 & I-65)
Under construction - opening 2006 |
Interstate 24
|
- Pulley's Mill, IL (I-57) to Chattanooga, TN (I-75)
Associated route: I-124 |
Interstate 25
|
- Las Cruces, NM (I-10) to Buffalo, WY (I-90)
Associated route: I-225 |
Interstate 26
|
- Colonial Heights, TN (I-81) to Charleston, SC (US-17)
Associated routes: I-126 | I-526 |
Interstate 27
|
- Lubbock, TX to Amarillo, TX (I-40)
|
Interstate 29
|
- Kansas City, MO (I-35 & I-70) to Pembina, ND (Canadian border)
Associated routes: I-129 | I-229 |
Interstate 30
|
- Fort Worth, TX (I-20) to Little Rock, AR (I-40)
Associated routes: I-430 | I-530 | I-630 |
Interstate 35
|
- Laredo, TX (Mexican border) to Duluth, MN (MN-61)
Associated routes: I-35E | I-35W | I-135 | I-235 | I-335 | I-435 | I-535 | I-635 |
Interstate 37
|
- Corpus Christi, TX (US-181) to San Antonio, TX (I-35)
|
Interstate 39
|
- Normal, IL (I-55) to Wausau, WI
|
Interstate 40
|
- Barstow, CA (I-15) to Wilmington, NC (NC-132)
Associated routes: I-140 | I-240 | I-440 | I-540 | I-840 |
Interstate 43
|
- Beloit, WI (I-39, I-90 and I-94) to Green Bay, WI (US-41)
|
Interstate 44
|
- Wichita Falls, TX (US-287) to St. Louis, MO (I-55)
Associated routes: I-244 | I-444* |
Interstate 45
|
- Galveston, TX (TX-124) to Dallas, TX (I-30)
Associated route: I-345* |
Interstate 49
|
- Lafayette, LA (I-10) to Shreveport, LA (I-20)
|
Interstate 55
|
- La Place, LA (I-10) to Chicago, IL (US-41)
Associated routes: I-155 | I-255 |
Interstate 57
|
- Miner, MO (I-55) to Chicago, IL (I-94)
|
Interstate 59
|
- Alton, LA (I-10 & I-12) to Lookout Mountain, GA (I-24)
Associated routes: I-359 | I-459 | I-759 |
Interstate 64
|
- St. Louis, MO (I-270) to Chesapeake, VA (I-264 & I-664)
Associated routes: I-164 | I-264 | I-464 | I-564 | I-664 |
Interstate 65
|
- Mobile, AL (I-10) to Gary, IN (I-90)
Associated routes: I-165 | I-465 | I-565 | I-865 |
Interstate 66
|
- Middletown, VA (I-81) to Washington, D.C. (US-29)
|
Interstate 68
|
- Morgantown, WV (I-79) to Hancock, MD (I-70)
|
Interstate 69
|
- Indianapolis, IN (I-465) to Port Huron, MI (Canadian border)
Associated route: I-469 |
Interstate 70
|
- Cove Fort, UT (I-15) to Baltimore, MD (I-695)
Associated routes: I-170 | I-270 | I-370 | I-470 | I-670 |
Interstate 71
|
- Louisville, KY (I-64) to Cleveland, OH (I-90)
Associated routes: I-271 | I-471 |
Interstate 72
|
- Hannibal, MO (US-61) to Champaign, IL (I-57)
Associated route: I-172 |
Interstate 73
|
- Candor, NC (US-220) to Greensboro, NC (I-40 & I-85)
|
Interstate 74
|
- Bettendorf, IA (I-80) to Cincinnati, OH (I-75)
Associated route: I-474 |
Interstate 75
|
- Ft. Lauderdale, FL (FL-826) to Sault Ste. Marie, MI (Canadian border)
Associated routes: I-175 | I-275 | I-375 | I-475 | I-575 | I-675 |
Interstate 76
|
- West - Denver, CO (I-70) to Big Springs, NE (I-80)
|
Interstate 76
|
- East - Westfield Center, OH (I-71) to Camden, NJ (I-295)
Associated routes: I-176 | I-276 | I-376 | I-476 | I-676 |
Interstate 77
|
- Columbia, SC (I-26) to Cleveland, OH (I-90)
Associated route: I-277 |
Interstate 78
|
- Bordnersville, PA (I-81) to New York City, NY
Associated routes: I-278 | I-478* | I-678 | I-878* |
Interstate 79
|
- Charleston, WV (I-77) to Erie, PA (PA-5)
Associated routes: I-279 | I-579 |
Interstate 80
|
- San Francisco, CA (US-101) to Fort Lee, NJ (I-95)
Associated routes: I-180 | I-280 | I-380 | I-480 | I-580 | I-680 | I-780 | I-880 | I-980 |
Interstate 81
|
- Dandridge, TN (I-40) to Fisher's Landing, NY (Canadian border)
Associated routes: I-181 | I-381 | I-481 | I-581 |
Interstate 82
|
- Ellensburg, WA (I-90) to Hermiston, OR (I-84)
Associated route: I-182 |
Interstate 83
|
- Baltimore, MD to Harrisburg, PA (I-81)
Associated route: I-283 |
Interstate 84
|
- West - Portland, OR (I-5) to Echo, UT (I-80)
Associated route: I-184 |
Interstate 84
|
- East - Scranton, PA (I-81) to Sturbridge, MA (I-90)
Associated routes: I-384 | I-684 |
Interstate 85
|
- Montgomery, AL (I-65) to Petersburg, VA (I-95)
Associated routes: I-185 | I-285 | I-385 | I-485 | I-585 | I-985 |
Interstate 86
|
- West - Heyburn, ID (I-84) to Pocatello, ID (I-15)
|
Interstate 86
|
- East - Erie, PA (I-90) to Elmira, NY (NY-17)
|
Interstate 87
|
- New York, NY (I-278) to Champlain, NY (Canadian border)
Associated routes: I-287 | I-587 | I-787 |
Interstate 88
|
- West - Moline, IL (I-80) to Chicago, IL (I-290)
|
Interstate 88
|
- East - Binghamton, NY (I-81) to Schenectady, NY (I-90)
|
Interstate 89
|
- Concord, NH (I-93) to Highgate Springs, VT (Canadian border)
Associated route: I-189 |
Interstate 90
|
- Seattle, WA to Boston, MA
Associated routes: I-190 | I-290 | I-390 | I-490 | I-590 | I-690 | I-790 | I-890 | I-990 |
Interstate 91
|
- New Haven, CT (I-95) to Derby Line, VT (Canadian border)
Associated routes: I-291 | I-391 | I-691 |
Interstate 93
|
- Canton, MA (I-95) to St. Johnsbury, VT (I-91)
Associated routes: I-293 | I-393 |
Interstate 94
|
- Billings, MT (I-90) to Port Huron, MI (Canadian border)
Associated routes: I-194 | I-294 | I-394 | I-494 | I-694 | I-794 | I-894 |
Interstate 95
|
- Miami, FL (US-1) to Houlton, ME (Canadian border)
Associated routes: I-195 | I-295 | I-395 | I-495 | I-595 | I-695 | I-795 | I-895 |
Interstate 96
|
- Muskegon, MI (US-31) to Detroit, MI (I-75)
Associated routes: I-196 | I-296* | I-496 | I-696 |
Interstate 97
|
- Annapolis, MD (US-50) to Baltimore, MD (I-695)
|
Interstate 99
|
- Bedford, PA (I-76) to Bald Eagle, PA (US-220)
|
Interstate 238
|
- Hayward, CA (I-580) to San Lorenzo, CA (I-880)
|
The interstate highways in Hawaii are signed with the standard Interstate shield, with the letter "H-" prefixed before the number. They are fully controlled-access routes built to the same standards as the mainland Interstate routes.