Tennessee State Route 475

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Interstate 475 markerState Route 475 marker

Interstate 475 and State Route 475
Knoxville Parkway
Route information
Major junctions
South end I-40 / I-75 near Lenoir City
  US 25W / SR 9 near Powell
North end I-75 northwest of Heiskell
Highway system
SR 474SR 476

Interstate 475 (I-475)/State Route 475 (SR-475) was a proposed Interstate highway and state highway in Knox and Anderson counties, within the eastern part of the U.S. state of Tennessee. The proposed route would have allowed through traffic on I-75 to bypass the city of Knoxville. It was planned to begin at the I-40/I-75 split and travel northeast through the communities of Solway and Bull Run, then join I-75 again northwest of Heiskell.[1]

Route description[edit]

I-475/SR-475 was proposed as a four-lane divided highway with full access control and a 70 mph (110 km/h) design speed. Upon completion, this route was expected to be added into the National Highway System and would have also been designated as a Tennessee Scenic Parkway or State Scenic Highway.[2] This route was also being studied by TDOT as a potential toll corridor and may have been planned to be extended to I-40 near mile marker 407.[2] The route would have served as an outer bypass to Interstate 640.


With the idea originally conceived in the mid 1990s, the Knoxville Parkway was dubbed the "orange route" in the press. The route was cancelled on June 25, 2010 due to changing traffic needs and high cost. The "no build" option was selected because projections showed that it would divert less traffic from I-40/I-75 than previously expected, and the estimated one billion dollar cost was prohibitive.[3]

See also[edit]


  1. ^ "Knoxville Parkway". Archived from the original on 2006-11-05. Retrieved 2006-11-14.
  2. ^ a b "SR 475 Conceptual Feasibility Study" (PDF). Archived from the original (PDF) on 2008-08-11. Retrieved 2008-02-12.
  3. ^ "TDOT Selects "No Build Option on Knoxville Parkway Project". Archived from the original on 2012-02-24. Retrieved 2010-06-27.

External links[edit]