Tennessee State Route 475

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State Route 475 marker

State Route 475
Knoxville Parkway
Route information
Maintained by TDOT
History: Cancelled
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
  • Tennessee State Routes
SR 474 SR 476

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

Route description[edit]

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 be extended to I-40 near mile marker 407.[2]


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". Retrieved 2006-11-14. 
  2. ^ a b "SR 475 Conceptual Feasibility Study". Retrieved 2008-02-12. 
  3. ^ "TDOT Selects "No Build Option on Knoxville Parkway Project". Retrieved 2010-06-27. 

External links[edit]