U.S.

Index

Odd number Interstates run E - W,   Even number Interstates run N - S

Routes ending in "0" are major E - W routes,   Routes ending in "5" are major N - S routes

 

 

INTERSTATES

 

Road

From – To

Length

 

Signed

 

I-2

(W) US 82 in Palmview to (E) I-69E / us 77 in Harlingden

46.8miles (75.3km)

I-4

(W) I-275 in Tampa to (E) I-95 / SR 400 in Daytona Beach

132.298miles (212.913 km)

I-5

(S) Fed 1 at Mexican Border in San Diego, CA to (N) BC99 at Canadian Border in Blaine, WA

1,381.29miles (2,222.97 km)

I-8

(W) Sunset Cliffs Boulevard / Nimitz Boulevard in San Diego, CA to (E) I-10 near Casa Grande, AZ

350.34miles (563.82 km)

I-10

(W) SR 1 in Santa Monica, CA TO (E) I-95 in Jacksonville, FL

2,460.34miles (3,959.53 km)

I-12

(W) I-10 in Baton Rouge to (E) I-10 / I-59 in Slidell

85.59miles (137.74 km)

I-15

(S) I-8 / SR 15 in San Diego, CA to (N) Hwy 4 at Canadian border near Sweetgrass, MT

1,433.52miles (2,307.03 km)

I-16

(W) I-75 in Macon to (E) Montgomery Street in Savannah

166.81miles (268.45 km)

I-17

(S) I-10 / US 60 in Phoenix, AZ to (N) I-40 in Flagstaff, AZ

145.76miles (234.58 km)

I-19

(S) West Crawford Street near Mexican border at Nogales to (N) I-10 in Tucson

63.28miles (101.84km)

I-20

(W) I-10 near Kent, TX to (E) I-95 / I-20 Bus. near Florence, SC

1,539.38miles (2,477.39 km)

I-22

(W) I-269 near Memphis, TN to (E) I-65 / US-31 in Birmingham, AL

213miles (343 km)

I-24

(W) -57 in Pulleys Mill, IL to (E) I-75 in Chattanooga, TN

316.36miles (509.13 km)

I-25

(S) I-10 / US 85 / US 180 near Las Cruces, New Mexico to (N) I-90 / US 87 in Buffalo, Wyoming

1,062.77miles (1,710.36 km)

I-26

(W) US-11W / US-23 / SR-1 / SR-137 in Kingsport, TN to (E) US 17 in Charleston, SC

349miles (562km)

I-27

(S) US 87 / Loop 289 in Lubbock to (N) I-40 / US 60 / US 87 / US 287 in Amarillo

124.13miles (199.77 km)

I-29

(S) I-35 / I-70 / US 71 / US 40 in Kansas City, MO to (N) US 81 / PTH 75 at Canadian border

745.51miles (1,199.78 km)

I-30

(W) I-20 near Fort Worth, TX to (E) I-40 / U.S. 65 / U.S. 67 / U.S. 167 in North Little Rock, AR

366.76miles (590.24 km)

I-35

(S) I-35 Bus. / US 83 / SH 359 in Laredo, TX to (N) MN 61 / London Road / 26th Avenue in Duluth, MN

1,568.38miles (2,524.06 km)

I-37

(S) US 181 / SH 35 at Corpus Christi to (N) I-35 / US 281 in San Antonio

143miles (230.14km)

I-39

(S) I-55 / US 51 in Normal, IL to (N) US 51 / WIS 29 in Rothschild, WI

306.14miles (492.68 km)

I-40

(W) I-15 in Barstow, CA to (E) US 117 / NC 132 in Wilmington, NC

2,555.10miles (4,112.03 km)

I-43

(S) I-39 / I-90 / WIS 81 in Beloit to (N) US 41 / US 141 in Howard

191.55miles (308.27 km)

I-44

(W) US 82 / US 277 / US 281 / US 287 in Wichita Falls, TX to (E) I-70 in St. Louis, MO

633.79miles (1,019.99 km)

I-45

(S) SH 87 in Galveston to (N) I-30 / I-345 / US 75 in Dallas

284.91miles (458.52 km)

I-49

(S) I-10 / US 167 in Lafayette, LA to (N) LA 168 (Rodessa Ida Road)

388miles (624.43 km)

I-55

(S) I-10 in Laplace, LA to (N) US 41 in Chicago, IL

964.25miles (1,551.81 km)

I-57

(S) I-55 / US 60 in Miner, MO to (N) I-94 in Chicago, IL

386.12miles (621.40 km)

I-59

(S) I-10 / I-12 near Slidell, LA to (N) I-24 in Wildwood, GA

445.23miles (716.53 km)

I-64

(W) I-70 / US 40 / US 61 in Wentzville, MO to (E) I-264 / I-664 in Chesapeake, VA

953.74miles (1,534.90 km)

I-65

(S) I-10 in Mobile, AL to (N) I-90 / Ind. Toll Rd. / US 12 / US 20 in Gary, IN

887.30miles (1,427.97 km)

I-66

(W) I-81 in Middletown, VA to (E) US 29 in Washington, DC

76.28miles (122.76 km)

I-68

(W) I-79 in Morgantown, WV to (E) I-70 / US 40 / US 522 in Hancock, MD

112.9miles (181.7 km)

I-69

(S) US 59 in Rosenberg, TX to (E) Highway 402 at Canadian border on Blue Water Bridge in Port Huron, MI

589.7miles (949.0 km)

I-70

(W) I-15 near Cove Fort, UT to (E) Park and Ride in Baltimore, MD

2,153.13miles (3,465.13 km)

I-71

(S) I-64 / I-65 in Louisville, KY to (N) I-90 / I-490 in Cleveland, OH

343.78miles (553.26 km)

I-72

(W) US 36 / US 36 Bus. / US 61 in Hannibal, MO to (E) Country Fair Drive in Champaign, IL

179.29miles (288.54 km)

I-73

(S) US 220 near Ellerbe, NC to (N) I-840 / Bryan Boulevard in Greensboro, NC

82.4miles (132.6 km)

I-74

(W) I-80 in Davenport, IA to (E) NC 41 near Lumberton, NC

428.81miles (690.10 km)

I-75

(S) SR 826 / SR 924 in Hialeah, FL to (N) Canadian border on International Bridge in Sault Ste. Marie, MI

1,786.47miles (2,875.04 km)

I-76 (W)

(W) I-70 in Arvada, CO to (E) I-80 near Big Springs, NE

188.1miles (302.72 km)

I-76 (E)

(W) I-71 / US 224 near Westfield Center, OH to (E) I-295 / Route 42 near Camden, NJ

434.87miles (699.86 km)

I-77

(S) I-26 / US 21 / US 176 / US 321 near Columbia, SC to (N) I-90 in Cleveland, OH

610.10miles (981.86 km)

I-78

(W) I-81 in Union Township, PA to (E) Canal Street in New York, NY

143.56miles (231.04 km)

I-79

(S) I-77 in Charleston, WV to (N) PA 5 / PA 290 east in Erie, PA

343.24miles (552.39 km)

I-80

(W) US 101 in San Francisco, CA to (E) I-95 / NJ Tpk. in Teaneck, NJ

2,899.54miles (4,666.36 km)

I-81

(S) I-40 in Dandridge, TN to (N) Hwy 137 on Thousand Islands Bridge at Wellesley Island, NY / Hill Island, ON

855miles (1,376km)

I-82

(W) I-90 / US 97 in Ellensburg, WA to (E) I-84 / US 30 in Umatilla County, OR

143.58miles (231.07 km)

I-83

(S) E. Fayette & N. President St. in Baltimore, MD to (N) I-81 / US 322 / Capital Beltway in Harrisburg, PA

85.3miles (137.3 km)

I-84 (W)

(W) I-5 / US 30 in Portland, OR to (E) I-80 in Echo, UT

769.62miles (1,238.58 km)

I-84 (E)

(W) I-81 / I-380 / US 6 in Dunmore, PA to (E) I-90 / Mass. Pike in Sturbridge, MA

232.39miles (374km)

I-85

(S) I-65 / US-82 / SR-6 in Montgomery, AL to (N) I-95 / US 460 in Petersburg, VA

668.75miles (1,076.25 km)

I-86 (W)

(W) I-84 / US-30 near Declo to (E) I-15 in Chubbuck

62.85miles (101.147 km)

I-86 (E)

(W) I-90 near Erie, PA to (E) Tioga County line in Waverly

212.69miles (342.29 km)

I-87

(S) I-278 in The Bronx to (N) A-15 at the Canadian border in Champlain

333.49miles (536.70 km)

I-88 (W)

(W) I-80 / IL 5 / IL 92 / IL 110 in East Moline to (E) I-290 / I-294 / IL 110 in Hillside

140.6miles (226.27 km)

I-88 (E)

(W) I-81 in Chenango to (E) I-90 / NY Thruway in Rotterdam

117.75miles (189.50 km)

I-89

(S) I-93 / NH 3A / Everett Tpke. nr. Concord, NH to (N) Route 133 at Canadian border nr. Highgate Springs, VT

191.12miles (307.58 km)

I-90

(W) SR 519 in Seattle, WA  to (E) Route 1A in Boston, MA

3,101.13miles (4,990.78 km)

I-91

(S) I-95 in New Haven, CT to (N) A-55 at the Canadian Border at Derby Line, VT

290.37miles (467.31 km)

I-93

(S) I-95 / US 1 / Route 128 in Canton, MA to (N) I-91 in Waterford, VT

189.95miles (305.69 km)

I-94

(W) I-90 in Billings, MT to (E) Highway 402 at Canadian border on Blue Water Bridge in Port Huron, MI

1,585.20miles (2,551.13 km)

I-95

(S) US 1 in Miami, FL to (N) Route 95 / US 2 at the Canadian border near Houlton, MEWoodstock, NB

1,919.74miles (3,089.52 km)

I-96

(W) US 31 in Norton Shores to (E) I-75 in Detroit

192.032miles (309.046 km)

I-97

(S) US 50 / US 301 in Parole to (N) I-695 / I-895 in Brooklyn Park

17.62miles (28.36 km)

I-99

(S) I-70 / I-76 / Penna. Tpk. / US 220 near Bedford to (N) I-80 / US 220 near Bellefonte

85.8miles (138km)

H-1

(W) Route 93 in Kapolei to (E) Route 72 in Honolulu, HI

27.16miles (43.71 km)

H-2

(S) H-1 in Pearl City to (N) Route 99 in Wahiawā

8.33miles (13.41km)

H-3

(W) H-1 in Hālawa to (E) H-201 in Hālawa

15.32miles (24.66 km)

 

Unsigned

 

A-1

(Glenn Highway, Richardson Highway, Alaska Highway) Anchorage to Canadian border in Alcan Border

408.23miles (656.98km)

A-2

(Alaska Highway & Richardson Highway) Tok to Fairbanks

202.18miles (325.38km)

A-3

(Seaward Highway, Sterling Highway) Anchorage to Soldotna

148.12miles (238.38km)

A-4

(Parks Highway) Gateway. near Palmer to Fairbanks

323.69miles (520.93km)

PRI-1

(N) PR-18 / PR-1 in Río Piedras to (S) PR-2 / PR-2 / PRI-2 in Ponce

67miles (108km)

PRI-2

(E) PRI-3 / PR-26 in San Juan, PR to (W)

51miles (82km)

PRI-3

(N) PRI-3 / PR-3 in Fajardo, Puerto Rico to (S) PRI-1 / PR-52 in Salinas, Puerto Rico

59miles (95km)