Tennessee State Route 106
State Route 106 is a north–south state highway in Middle Tennessee. The highway runs concurrently with U.S. Route 431 for much of its course as it is a secret, or hidden, designation since US 431 was extended into Tennessee and Kentucky from Alabama in 1953. SR 106 traverses Marshall, Maury, Williamson, and Davidson counties in the state. The only portion of SR 106 that is actually signed is on the Lewisburg Bypass in Marshall County from US 31A on the south side to US 431 and SR 50 on the east side.
