I-75, I-76, I-77 and their Signed Branch Routes

Interstate South/West Terminus North/East Terminus
75 Hialeah, FL Canadian Border – Sault St. Marie, MI
175 FL St. Petersburg Downtown St. Petersburg
275 FL Ellenton Wesley Chapel
275 IN/KY/OH Beltway – Cincinnati
275 MI Flat Rock Farmington Hills
275 TN Downtown Knoxville northern Knoxville
375 FL St. Petersburg Downtown St. Petersburg
375 MI Downtown Detroit Detroit
475 GA Macon Popes Ferry
475 MI Grand Blanc Twp Mt. Morris Twp
475 OH Perrysburg Toledo
575 GA Marietta Nelson
675 GA Stockbridge Gresham Park
675 MI Saginaw Zilwaukee
675 OH Singing Hills Fairborn
76 (west) Wheat Ridge, CO near Big Spring, NE
76 (east) Seville, OH Camden, NJ
176 PA Morgantown Reading
276 PA King of Prussia Levittown
376 PA Pittsburgh Monroeville
476 PA Chester Clarks Summit
676 NJ/PA Philadelphia, PA Camden, NJ
77 Cayce, SC Cleveland, OH
277 NC Downtown Charlotte Uptown Charlotte
277 OH Akron Akron
I-40/75 west - Knoxville, TN
The overlap for I-40/75 expands to ten overall lanes on the west side of Knoxville. 186,045 vehicles per day were recorded on this stretch in 2013. 08/17/13

Expansion of the overlap along I-40/75 in eastern Tennessee was completed in 2002.

I-76/77 east split - Akron, OH
I-76 and I-77 combine for 1.9 miles through Akron, Ohio. 06/15/10

I-76 replaced Interstate 80S through Ohio in 1973. The Youngstown freeway loop is signed as I-680 instead of an I-X76, referencing the previous numbering of the Ohio Turnpike eastern extent as I-80S.