Interstate 640 – Tennessee
Interstate 640 through Knoxville is an urban loop serving both long distance and freight traffic along I-40 and I-75 north to Kentucky. Additionally the bypass is the mandatory route for trucks carrying hazardous materials across the city. Varying between four and six lanes, I-75 accompanies I-640 along the arc south from I-275 at Inskip to I-40 by Marble City. I-640 measures 10.8 miles in length, but only the portion east of I-75 is attributed to it within the FHWA Route Log and Finder List.
Construction for the Knoxville northern bypass commenced October 1977 with a completion date of April 1982. Interstate 75 was relocated to bypass Downtown Knoxville along side I-640 in 1982. The former alignment was renumbered Interstate 275.
East End – Knoxville, TN
West End – Knoxville, TN
Mileage – 7.03
Cities – Knoxville
- Junctions –
Source: December 31, 2017 Interstate Route Log and Finders List
I-640 Annual Average Daily Traffic (AADT)
|Location||Vehicles per day|
|I-40/75 to Exit 1||72,197|
|Exits 1 to 3||78,132|
|Exits 3 to 6||79,350|
|Exits 6 to 8||60,071|
|Exit 8 to I-40||54,925|
Source: 2018 Traffic Map – Knox County, Tennessee Department of Transportation
East End – Loveland, Knoxville, Tennessee
West End – Marble City, Knoxville, Tennessee
Page updated January 11, 2019.