The U.S. Interstate system is rather impressive, with 71 primary interstates throughout the Interstate Highway System. While every state in the lower 48 has at least one primary interstate running through it, some are a lot less substantial than others. Beaver Geography took a look at the widest interstate in each state, ranging from just 6 lanes to an enormous 23 lanes.
What's Every US State's Widest Interstate?
The interstates by size mention in the video include:
- 6 lanes: I-89 (Burlington, VT), I-90 (Billings, MT).
- 7 lanes: I-29 (Fargo, ND).
- 8 lanes: I-29 (Sioux Falls, SD), I-95 (West Portland, ME).
- 9 lanes: I-205 (Portland, OR), I-30 (Little Rock, AR).
- 10 lanes: I-26 (Seven Oaks, SC), I-93 (Manchester, NH), I-55 (Jackson, MS).
- 11 lanes: I-84 (Boise, ID).
- 12 lanes: I-95 (Warwick, RI), I-25 (Albuquerque, NM), I-65 (Louisville, KY), I-95 (Wilmington, DE), I-84 (East Hartford, CT), I-20/59 (Birmingham, AL).
- 13 lanes: I-95 (Baltimore, MD), I-35/40 (Oklahoma City, OK).
- 14 lanes: I-41/94 (Milwaukee, WI), I-40 (Statesville, NC), I-35/94 (Minneapolis, MN), I-96 (Detroit, MI), I-93 (Boston, MA), I-20 (Shreveport, LA).
- 15 lanes: I-65 (Nashville, TN), I-95 (Philadelphia, PA), I-15 (Las Vegas, NV), I-29/80 (Council Bluffs, IA), I-90 (Chicago, IL).
- 16 lanes: I-5 (Seattle, WA), I-271 (Warrenville Heights, OH), I-80 (Omaha, NE), I-75 (Atlanta, GA).
- 17 lanes: I-75 (Miramar, FL), I-25 (Denver, CO).
- 18 lanes: I-15 (Salt Lake City, UT), I-10 (Houston, TX), H-1 (Honolulu, HI).
- 19 lanes: I-70 (Indianapolis, IN), I-49/470 (Kansas City, MO).
- 21 lanes: I-470 (Lenexa, KS), Dulles Toll Road (Tysons, VA).
- 22 lanes: I-10 (Tempe, AZ).
- 23 lanes (tied 1st): I-95 (NJ near Newark), I-5 (San Diego, CA).
