Tennessee State Route 455
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State Route 455 is a short bypass around Ashland City in Cheatham County. The general routing is southeast-northwest. SR 455 is less than 1 mile (1.6 kilometers) in length.
The route is a continuation of a bypass from State Route 12 to State Route 49 which runs by the A.O. Smith water heater factory to a point just north of the Cumberland River bridge which is not designated a state route. State Route 455 has its origins in a 1997 referendum in which the voters of Ashland City authorized a 1/2 cent sales tax increase with proceeds going to build and maintain a continuation of the bypass back around to Route 12. The road was finally completed in 2005.