TN 78
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From:  Dyersburg (Dyer County)
To:  Kentucky State Line above Phillippy (Lake County)
Total Length:
35.7 miles
The route continues 80 miles as KY 94 to end at KY 80 near Kentucky Lake
ROUTE LOG
TN 104: 0 - 0
US 51, TN 3: 1.6 - 1.6
I-155 (exit 13), US 412: 0.7 - 2.3
TN 182: 2.6 - 4.9
TN 103: 4.6 - 9.5
Obion-Dyer Line: 4.0 - 13.5
Lake-Obion Line: 1.0 - 14.5
TN 79: 0.6 - 15.1
TN 21, TN 22 SB: 10.0 - 25.1
TN 22 NB: 0.5 - 25.6
TN 212: 1.4 - 27.0
TN 213: 5.7 - 32.7
KY STATE LINE: 3.0 - 35.7
Creation: An original state route. In 1924 it ran from TN 20 (now TN 103) near Miston north through Tiptonville to Kentucky.
Adjustments: There are some zig-zag possibilities for the original path of TN 78, but the current straight path in the northwest Dyer County and Obion County areas was in place by 1926 (bridge date) and the straight path northeast of Tiptonville was in place by 1928 (bridge date).
In 1928 or 1929, TN 78 was extended south replacing TN 20 to end at the new TN 20 (now TN 104) Dyersburg.
In 1930, TN 78 was removed from Tiptonville-Ridgely Rd and placed on the current routing east of the railroad.
Also in 1930, there may have been an attempt by Kentucky to get some portion of TN 78 to be designated as US 268.
By 1938, TN 78 was removed from Harness Rd/Burnt Mill Rd which no longer crosses the Obion River.

1924 Official
TN 78 from TN 20 to KY
Dec 1924 Official
1929 Official
TN 78 extended to Dyersburg
1929 Official
1930 Official
TN 78 moved to east of RR between Ridgely and Tiptonville
1930 Official

Posting: Posted as secondary routing south of US 51; primary routing everywhere else
Secret US Route Overlay: None
Comment: TN 79 provides the main access to Lake County from the south


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Page last modified 15 October 2020