| Previous TN 3 Byp's: 
 
 
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 | TN 3 Byp #1: Appears on topos and aerials between 1951-54 (appeared in route log starting 1958) as a new bypass around the south and east of Union City.  County maps through at least 1963 show this as TN 3 Loop. By 1970, they showed it as TN 3 Byp. About 1971, this TN 3 Byp was renumbered as mainline TN 3 when the new TN 3 Byp was built around the west and north of Union City.  Today it is part of TN 184.
 
 
|  TN 3 Loop around Union City
 1963 Obion County
 |  TN 3 Byp first bypass around Union City
 1970 Obion County
 |  TN 3 modern bypass Union City to S Fulton route
 1971 Official
 |  TN 3 Byp #2: Appears in 1959 or 1960 as new construction around the west and north of Dyersburg.
 In 1983, TN 3 Byp became part of mainline TN 3.
 
 
|  TN 3 Byp around Dyersburg
 1964 Official
 |  US 51/TN 3 moved to Dyersburg Bypass
 1986 Official
 |  In 1983, TN 3 Byp became mainline TN 3.
 TN 3 Byp #3: Appears about 1971 as new construction around the west and north of Union City.
 In 1983, TN 3 Byp became mainline TN 3.  See scans above.
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