Tennessee State Route 21

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State Route 21 primary marker State Route 21 secondary marker

State Route 21
Route information
Maintained by TDOT
Major junctions
West end: Mississippi River near Tiptonville
  Secondary Tennessee 22.svg TN 22 at Tiptonville
Tennessee 78.svg TN 78 at Tiptonville
East end: US 51.svg US 51 at Troy
Counties: Obion, Lake
Highway system
  • Tennessee State Routes
SR 20 SR 22

Tennessee State Route 21 is a two lane highway that runs from the Mississippi River west of Tiptonville, Tennessee to U.S. Highway 51 in Troy, Tennessee. This road provides access to Reelfoot Lake State Park.