Oklahoma State Highway 78

State Highway 78 is a 60-mile (97 km) long[1] (97 km) state highway in southern Oklahoma. It runs from the Red River (where it crosses into Texas as State Highway 78) to Tishomingo. It has no lettered spur routes.

State Highway 78 marker

State Highway 78

Route information
Maintained by ODOT
Length60 mi (97 km)
Major junctions
South end SH 78 at the Texas state line
Major intersections
North end US 377 / SH-22 / SH-99 in Tishomingo
Location
CountryUnited States
StateOklahoma
Highway system
  • Oklahoma State Highway System
← US 77→ SH-79

Route description
SH-78 crossing the Red River

State Highway 78 enters Oklahoma across the Red River on the State Highway No. 78 Bridge at the Red River, near the unincorporated community of Karma. Near Yuba, SH-78 curves west to head toward Achille, where it meets State Highway 91. It curves back north here, meets State Highway 70E, and then passes through the east part of Durant, where it crosses US-70. In northern Durant, SH-78 has an interchange with the US-69/75 freeway.

Three miles north of US-69/75, SH-78 turns west to head through Cobb and Brown before turning north to meet State Highway 199. It meets SH-22 for the first time at Nida. It then passes through Emet and turns back west at Milburn. It then meets SH-22 for a second time three miles (5 km) east of Tishomingo. It then joins SH-22 into Tishomingo, where it ends at US-377/SH-99.

History

The road that would become SH-78 was originally commissioned as SH-299 on November 22, 1938.[2] SH-299 was renumbered to SH-78 in its entirety in 1955,[3] most likely to match the route number of TX-78.

Previous Routes

SH-78 was originally designated as a route from Boise City to the Texas Border.[4] This route became US 385 in 1955.

Junction list
CountyLocationmi[1]kmDestinationsNotes
BryanRed River0.000.00
 SH 78 south		Continuation into Texas
State Highway 78 Bridge at the Red River
Achille15.925.6 SH-91
​22.436.0 SH-70E
Durant US 70Interchange
30.549.1 US 69 / US 75 – Atoka, Denison TXHalf-folded diamond interchange[5]
​32.852.8 SH-48Southern terminus of SH-48
Brown40.965.8 SH-199Eastern terminus of SH-199
JohnstonNida44.171.0
 SH-22 east – Caddo		South end of SH-22 overlap
44.371.3
 SH-22 west – Butcher Pen		North end of SH-22 overlap
Milburn52.284.0 SH-48A
​57.492.4
 SH-22 east – Nida		South end of SH-22 overlap
Tishomingo60.096.6
 US 377 / SH-99 north (Kemp Avenue)

US 377 / SH-99 south (SH-22 west)		Northern terminus; north end of SH-22 overlap; road continues west as US-377/SH-99 south/SH-22 west (Main Street)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. Stuve, Eric. "OK-78". OKHighways.com.
  2. Oklahoma Department of Transportation, Planning & Research Division. "Memorial Dedication & Revision History - SH-22". Retrieved 2007-05-08.
  3. Official State Highway Map (Map) (1956 ed.). Oklahoma Department of Transportation.
  4. Official State Highway Map (Map) (1940 ed.). Oklahoma Department of Transportation.
  5. Google (June 8, 2009). "Oklahoma State Highway 78" (Map). Google Maps. Google. Retrieved June 8, 2009.
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