ROUTE LOG
TN 18: 0 - 0
TN 100: 3.3 - 3.3
Madison-Hardeman Line: 6.3 - 9.6
TN 223: 3.1 - 12.7
US 70, TN 1: 9.5 - 22.2
I-40 (exit 68): 0.8 - 23.0
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Creation: Appeared in 1949 or 1950 running from US 70 near Leighton to Sturdivant Crossing Rd in Mercer.
Adjustments: Between 1952-54, TN 138 was extended south through Toone to end at TN 18.
About 1960, TN 138 was extended north to I-40.
Posting: Posted as secondary routing throughout
Secret US Route Overlay: None
Comment: None
TN 138 from US 70 to Mercer
1951 Official
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TN 138 extended south to TN 18
1956 Gousha
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TN 138 extended north to I-40
1971 Official
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Willoghby (Hardeman County)
north of Leighton (Madison County)